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84,206 | 83,864 | 5727f2e03acd2414000df092 | generic | The Egyptian singer Umm Kulthum hosted a public celebration for the officers' return despite reservations from the royal government, which had been pressured by the British to prevent the reception. The apparent difference in attitude between the government and the general public increased Nasser's determination to topple the monarchy. Nasser had also felt bitter that his brigade had not been relieved despite the resilience it displayed. He started writing his book Philosophy of the Revolution during the siege. | What book did Nasser start writing? | {'text': 'Philosophy of the Revolution', 'answer_start': 470} |
30,554 | 30,212 | 5ad2822fd7d075001a429816 | generic | Derrick May a.k.a. "MAYDAY" and Thomas Barnett released "Nude Photo" in 1987 on May's label "Transmat Records", which helped kickstart the Detroit techno music scene and was put in heavy rotation on Chicago's Hot Mix 5 Radio DJ mix show and in many Chicago clubs.[citation needed] A year later, Transmat released what was to become one of techno and house music's classic anthems – the seminal track "Strings of Life". Transmat Records went on to have many more successful releases[citation needed] such as 1988's "Wiggin". As well, Derrick May had successful[citation needed] releases on Kool Kat Records and many remixes for a host of underground and mainstream recording artist. | What was the real name of the artist Wiggin? | {'text': 'Derrick May', 'answer_start': 0} |
79,007 | 78,665 | 5727f7cbff5b5019007d9974 | generic | The English Province was a component of the international order from which it obtained its laws, direction, and instructions. It was also, however, a group of Englishmen. Its direct supervisors were from England, and the members of the English Province dwelt and labored in English cities, towns, villages, and roadways. English and European ingredients constantly came in contact. The international side of the province's existence influenced the national, and the national responded to, adapted, and sometimes constrained the international. | The Dominican Order in England was controlled by who? | {'text': 'Englishmen', 'answer_start': 159} |
94,748 | 94,406 | 572b5109111d821400f38e5b | generic | Several dozen radioisotopes have been characterized. 65Zn, which has a half-life of 243.66 days, is the most long-lived radioisotope, followed by 72Zn with a half-life of 46.5 hours. Zinc has 10 nuclear isomers. 69mZn has the longest half-life, 13.76 h. The superscript m indicates a metastable isotope. The nucleus of a metastable isotope is in an excited state and will return to the ground state by emitting a photon in the form of a gamma ray. 61Zn has three excited states and 73Zn has two. The isotopes 65Zn, 71Zn, 77Zn and 78Zn each have only one excited state. | What is the half life of 72Zn? | {'text': '46.5 hours', 'answer_start': 171} |
74,203 | 73,861 | 572a3b543f37b319004787f3 | generic | New Haven's greatest culinary claim to fame may be its pizza, which has been claimed to be among the best in the country, or even in the world. New Haven-style pizza, called "apizza" (pronounced ah-BEETS, [aˈpitts] in the original Italian dialect), made its debut at the iconic Frank Pepe Pizzeria Napoletana (known as Pepe's) in 1925. Apizza is baked in coal- or wood-fired brick ovens, and is notable for its thin crust. Apizza may be red (with a tomato-based sauce) or white (with a sauce of garlic and olive oil), and pies ordered "plain" are made without the otherwise customary mozzarella cheese (originally smoked mozzarella, known as "scamorza" in Italian). A white clam pie is a well-known specialty of the restaurants on Wooster Street in the Little Italy section of New Haven, including Pepe's and Sally's Apizza (which opened in 1938). Modern Apizza on State Street, which opened in 1934, is also well-known. | In what year was New Haven-style pizza found? | {'text': '1925', 'answer_start': 330} |
124,918 | 124,576 | 57324d11b9d445190005e9ee | generic | Once the coastal assault had succeeded, Eisenhower insisted on retaining personal control over the land battle strategy, and was immersed in the command and supply of multiple assaults through France on Germany. Field Marshal Montgomery insisted priority be given to his 21st Army Group's attack being made in the north, while Generals Bradley (12th U.S. Army Group) and Devers (Sixth U.S. Army Group) insisted they be given priority in the center and south of the front (respectively). Eisenhower worked tirelessly to address the demands of the rival commanders to optimize Allied forces, often by giving them tactical, though sometimes ineffective, latitude; many historians conclude this delayed the Allied victory in Europe. However, due to Eisenhower's persistence, the pivotal supply port at Antwerp was successfully, albeit belatedly, opened in late 1944, and victory became a more distinct probability. | What geographic portion of the front did the Sixth US Army Group operate on? | {'text': 'south', 'answer_start': 452} |
103,745 | 103,403 | 572ea6dbdfa6aa1500f8d254 | generic | Neptune's dark spots are thought to occur in the troposphere at lower altitudes than the brighter cloud features, so they appear as holes in the upper cloud decks. As they are stable features that can persist for several months, they are thought to be vortex structures. Often associated with dark spots are brighter, persistent methane clouds that form around the tropopause layer. The persistence of companion clouds shows that some former dark spots may continue to exist as cyclones even though they are no longer visible as a dark feature. Dark spots may dissipate when they migrate too close to the equator or possibly through some other unknown mechanism. | What on Neptune are associated with dark spots that are brighter? | {'text': 'methane clouds', 'answer_start': 329} |
108,436 | 108,094 | 572f46d8947a6a140053c852 | generic | Recent studies, as by the APG, show that the monocots form a monophyletic group (clade) but that the dicots do not (they are paraphyletic). Nevertheless, the majority of dicot species do form a monophyletic group, called the eudicots or tricolpates. Of the remaining dicot species, most belong to a third major clade known as the magnoliids, containing about 9,000 species. The rest include a paraphyletic grouping of primitive species known collectively as the basal angiosperms, plus the families Ceratophyllaceae and Chloranthaceae. | What type of groups do monocots form, based on a recent APG studies? | {'text': 'monophyletic', 'answer_start': 61} |
76,211 | 75,869 | 57278b875951b619008f8d01 | generic | Gorbachev also radically expanded the scope of Glasnost, stating that no subject was off-limits for open discussion in the media. Even so, the cautious Soviet intelligentsia took almost a year to begin pushing the boundaries to see if he meant what he said. For the first time, the Communist Party leader had appealed over the heads of Central Committee members for the people's support in exchange for expansion of liberties. The tactic proved successful: Within two years political reform could no longer be sidetracked by Party "conservatives." An unintended consequence was that having saved reform, Gorbachev's move ultimately killed the very system it was designed to save. | Whose support did Gorbachev seek in order to increase liberties? | {'text': "the people's", 'answer_start': 366} |
94,290 | 93,948 | 5a3e90275a76c5001a3a834e | generic | During 734 BC the Phoenicians, a sea trading people from the north of ancient Canaan, built a small settlement on the natural harbor of Palermo. Some sources suggest they named the settlement "Ziz." It became one of the three main Phoenician colonies of Sicily, along with Motya and Soluntum. However, the remains of the Phoenician presence in the city are few and mostly preserved in the very populated center of the downtown area, making any excavation efforts costly and logistically difficult. The site chosen by the Phoenicians made it easy to connect the port to the mountains with a straight road that today has become Corso Calatifimi. This road helped the Phoenicians in trading with the populations that lived beyond the mountains that surround the gulf. | What were the other tewo Canaanite colonies of Sicily? | {'text': 'Motya and Soluntum', 'answer_start': 273} |
119,080 | 118,738 | 57311e12a5e9cc1400cdbc37 | generic | The ground-attack aircraft of the USAF are designed to attack targets on the ground and are often deployed as close air support for, and in proximity to, U.S. ground forces. The proximity to friendly forces require precision strikes from these aircraft that are not possible with bomber aircraft listed below. They are typically deployed as close air support to ground forces, their role is tactical rather than strategic, operating at the front of the battle rather than against targets deeper in the enemy's rear. | What are the ground-attack aircraft in the USAF usually deployed in support for? | {'text': 'U.S. ground forces', 'answer_start': 154} |
28,322 | 27,980 | 56fb95f0b28b3419009f1e70 | generic | The medieval period is frequently caricatured as a "time of ignorance and superstition" that placed "the word of religious authorities over personal experience and rational activity." This is a legacy from both the Renaissance and Enlightenment, when scholars contrasted their intellectual cultures with those of the medieval period, to the detriment of the Middle Ages. Renaissance scholars saw the Middle Ages as a period of decline from the high culture and civilisation of the Classical world; Enlightenment scholars saw reason as superior to faith, and thus viewed the Middle Ages as a time of ignorance and superstition. | Along with the Renaissance, during what period were the Middle Ages disparaged? | {'text': 'Enlightenment', 'answer_start': 231} |
30,784 | 30,442 | 5706ee379e06ca38007e921b | generic | The convention followed by many British publishers (including scientific publishers, like Nature, magazines, like The Economist and New Scientist, and newspapers, like The Guardian and The Times) and U.S. newspapers is to use sentence-style capitalisation in headlines, where capitalisation follows the same rules that apply for sentences. This convention is usually called sentence case. It may also be applied to publication titles, especially in bibliographic references and library catalogues. Examples of global publishers whose English-language house styles prescribe sentence-case titles and headings include the International Organization for Standardization. | What is the basis of capitalization standards for the sentence-style capitalization? | {'text': 'sentences', 'answer_start': 329} |
119,358 | 119,016 | 5731249ea5e9cc1400cdbc9d | generic | Quantum dots (QD) are semiconductor nanocrystals that possess unique optical properties. Their emission color can be tuned from the visible throughout the infrared spectrum. This allows quantum dot LEDs to create almost any color on the CIE diagram. This provides more color options and better color rendering than white LEDs since the emission spectrum is much narrower, characteristic of quantum confined states. There are two types of schemes for QD excitation. One uses photo excitation with a primary light source LED (typically blue or UV LEDs are used). The other is direct electrical excitation first demonstrated by Alivisatos et al. | The narrowing of the emission spectrum in Quantum Dot LEDs allows them to do what? | {'text': 'better color rendering', 'answer_start': 287} |
43,337 | 42,995 | 570dbbe116d0071400510d47 | generic | In an attempt at reform, Eritrean government officials and NGO representatives have participated in numerous public meetings and dialogues. In these sessions they have answered questions as fundamental as, "What are human rights?", "Who determines what are human rights?", and "What should take precedence, human or communal rights?" In 2007, the Eritrean government also banned female genital mutilation. In Regional Assemblies and religious circles, Eritreans themselves speak out continuously against the use of female circumcision. They cite health concerns and individual freedom as being of primary concern when they say this. Furthermore, they implore rural peoples to cast away this ancient cultural practice. Additionally, a new movement called Citizens for Democratic Rights in Eritrea aimed at bringing about dialogue between the government and opposition was formed in early 2009. The group consists of ordinary citizens and some people close to the government. | What new movement is aimed at opening dialogue between the government and opposition? | {'text': 'Citizens for Democratic Rights in Eritrea', 'answer_start': 754} |
40,922 | 40,580 | 570d8d82b3d812140066da2b | generic | The British dealt with range measurement first, when it was realised that range was the key to producing a better fuse setting. This led to the Height/Range Finder (HRF), the first model being the Barr & Stroud UB2, a 2-metre optical coincident rangefinder mounted on a tripod. It measured the distance to the target and the elevation angle, which together gave the height of the aircraft. These were complex instruments and various other methods were also used. The HRF was soon joined by the Height/Fuse Indicator (HFI), this was marked with elevation angles and height lines overlaid with fuse length curves, using the height reported by the HRF operator, the necessary fuse length could be read off. | The HRF measured target distance and what else? | {'text': 'elevation angle', 'answer_start': 325} |
89,371 | 89,029 | 5ad138be645df0001a2d123e | generic | Labour went on to win the 1950 general election, but with a much reduced majority of five seats. Soon afterwards, defence became a divisive issue within the party, especially defence spending (which reached a peak of 14% of GDP in 1951 during the Korean War), straining public finances and forcing savings elsewhere. The Chancellor of the Exchequer, Hugh Gaitskell, introduced charges for NHS dentures and spectacles, causing Bevan, along with Harold Wilson (then President of the Board of Trade), to resign over the dilution of the principle of free treatment on which the NHS had been established. | What was not a principle the NHS was based on? | {'text': 'free treatment', 'answer_start': 546} |
128,375 | 128,033 | 5733b2e14776f41900661087 | generic | Archaeology is the study of the human past through its material remains. Artifacts, faunal remains, and human altered landscapes are evidence of the cultural and material lives of past societies. Archaeologists examine these material remains in order to deduce patterns of past human behavior and cultural practices. Ethnoarchaeology is a type of archaeology that studies the practices and material remains of living human groups in order to gain a better understanding of the evidence left behind by past human groups, who are presumed to have lived in similar ways. | What can archaeologists deduce from material remains? | {'text': 'human behavior and cultural practices', 'answer_start': 278} |
7,552 | 7,210 | 56db3337e7c41114004b4f31 | generic | The noted Indian social activist and a retired Indian Police Service (IPS) officer Kiran Bedi refused to participate saying "she doesn’t want to run in the event as ‘caged woman’." On April 15, Bollywood actress Soha Ali Khan pulled out of the Olympic torch relay, citing “very strong personal reasons”. On April 16, a protest was organised in Delhi "against Chinese repression in Tibet", and was broken up by the police. | What retired police officer refused to carry the torch in India? | {'text': 'Kiran Bedi', 'answer_start': 83} |
21,445 | 21,103 | 56e8653c37bdd419002c44f5 | generic | After a major blaze in 1405, the city's original wooden buildings were gradually replaced by half-timbered houses and subsequently the sandstone buildings which came to be characteristic for the Old Town. Despite the waves of pestilence that hit Europe in the 14th century, the city continued to grow: mainly due to immigration from the surrounding countryside. | What was destroyed in the fire? | {'text': "the city's original wooden buildings", 'answer_start': 29} |
105,999 | 105,657 | 572ede7cc246551400ce475c | generic | Emperor Zhang's (r. 75–88 AD) reign came to be viewed by later Eastern Han scholars as the high point of the dynastic house. Subsequent reigns were increasingly marked by eunuch intervention in court politics and their involvement in the violent power struggles of the imperial consort clans. With the aid of the eunuch Zheng Zhong (d. 107 AD), Emperor He (r. 88–105 AD) had Empress Dowager Dou (d. 97 AD) put under house arrest and her clan stripped of power. This was in revenge for Dou's purging of the clan of his natural mother—Consort Liang—and then concealing her identity from him. After Emperor He's death, his wife Empress Deng Sui (d. 121 AD) managed state affairs as the regent empress dowager during a turbulent financial crisis and widespread Qiang rebellion that lasted from 107 to 118 AD. | Who concealed the identity of Emperor He's mother? | {'text': 'Empress Dowager Dou', 'answer_start': 375} |
79,498 | 79,156 | 5a7e4a1670df9f001a87569c | generic | The climate of Cork, like the rest of Ireland, is mild and changeable with abundant rainfall and a lack of temperature extremes. Cork lies in plant Hardiness zone 9b. Met Éireann maintains a climatological weather station at Cork Airport, a few kilometres south of the city. It should be noted that the airport is at an altitude of 151 metres (495 ft) and temperatures can often differ by a few degrees between the airport and the city itself. There are also smaller synoptic weather stations at UCC and Clover Hill. | What does Met Eireann maintain at Clover Hill? | {'text': 'a climatological weather station', 'answer_start': 189} |
124,386 | 124,044 | 57323dbf0fdd8d15006c6873 | generic | Russell moved the Watch Tower Society's headquarters to Brooklyn, New York, in 1909, combining printing and corporate offices with a house of worship; volunteers were housed in a nearby residence he named Bethel. He identified the religious movement as "Bible Students," and more formally as the International Bible Students Association. By 1910, about 50,000 people worldwide were associated with the movement and congregations re-elected him annually as their "pastor." Russell died October 31, 1916, at the age of 64 while returning from a ministerial speaking tour. | What was the name of the residence where volunteers were housed? | {'text': 'Bethel', 'answer_start': 205} |
61,225 | 60,883 | 5726ad3c5951b619008f79df | generic | Madonna starred as Breathless Mahoney in the film Dick Tracy (1990), with Warren Beatty playing the title role. Her performance led to a Saturn Award nomination for Best Actress. To accompany the film, she released the soundtrack album, I'm Breathless, which included songs inspired by the film's 1930s setting. It also featured the US number-one hit "Vogue" and "Sooner or Later", which earned songwriter Stephen Sondheim an Academy Award for Best Original Song in 1991. While shooting the film, Madonna began a relationship with Beatty, which dissolved by the end of 1990. In April 1990, Madonna began her Blond Ambition World Tour, which was held until August. Rolling Stone called it an "elaborately choreographed, sexually provocative extravaganza" and proclaimed it "the best tour of 1990". The tour generated strong negative reaction from religious groups for her performance of "Like a Virgin", during which two male dancers caressed her body before she simulated masturbation. In response, Madonna said, "The tour in no way hurts anybody's sentiments. It's for open minds and gets them to see sexuality in a different way. Their own and others". The Laserdisc release of the tour won Madonna a Grammy Award in 1992 for Best Long Form Music Video. | When did Madonna and Beatty's relationship end? | {'text': 'end of 1990', 'answer_start': 562} |
105,866 | 105,524 | 5a87bcd31d3cee001a6a1333 | generic | Evaporation and sublimation into a vacuum is called outgassing. All materials, solid or liquid, have a small vapour pressure, and their outgassing becomes important when the vacuum pressure falls below this vapour pressure. In man-made systems, outgassing has the same effect as a leak and can limit the achievable vacuum. Outgassing products may condense on nearby colder surfaces, which can be troublesome if they obscure optical instruments or react with other materials. This is of great concern to space missions, where an obscured telescope or solar cell can ruin an expensive mission. | What can solar cells limit the achievement of? | {'text': 'vacuum', 'answer_start': 315} |
16,420 | 16,078 | 5a4d38437a6c4c001a2bbc60 | generic | The most recent major entrant to the browser market is Chrome, first released in September 2008. Chrome's take-up has increased significantly year by year, by doubling its usage share from 8% to 16% by August 2011. This increase seems largely to be at the expense of Internet Explorer, whose share has tended to decrease from month to month. In December 2011, Chrome overtook Internet Explorer 8 as the most widely used web browser but still had lower usage than all versions of Internet Explorer combined. Chrome's user-base continued to grow and in May 2012, Chrome's usage passed the usage of all versions of Internet Explorer combined. By April 2014, Chrome's usage had hit 45%. | When did the usage of IE surpass all versions of Chrome combined? | {'text': 'in May 2012', 'answer_start': 548} |
65,003 | 64,661 | 5ad0cd2a645df0001a2d03c7 | generic | It was principally the widespread introduction of a single feature, the pointed arch, which was to bring about the change that separates Gothic from Romanesque. The technological change permitted a stylistic change which broke the tradition of massive masonry and solid walls penetrated by small openings, replacing it with a style where light appears to triumph over substance. With its use came the development of many other architectural devices, previously put to the test in scattered buildings and then called into service to meet the structural, aesthetic and ideological needs of the new style. These include the flying buttresses, pinnacles and traceried windows which typify Gothic ecclesiastical architecture. But while pointed arch is so strongly associated with the Gothic style, it was first used in Western architecture in buildings that were in other ways clearly Romanesque, notably Durham Cathedral in the north of England, Monreale Cathedral and Cathedral of Cefalù in Sicily, Autun Cathedral in France. | What is the name of the cathedral in Sicily that first displayed the use of the twisted arch? | {'text': 'Cathedral of Cefalù', 'answer_start': 965} |
104,985 | 104,643 | 572f785e04bcaa1900d769c0 | generic | Although not specifically prepared to conduct independent strategic air operations against an opponent, the Luftwaffe was expected to do so over Britain. From July until September 1940 the Luftwaffe attacked RAF Fighter Command to gain air superiority as a prelude to invasion. This involved the bombing of English Channel convoys, ports, and RAF airfields and supporting industries. Destroying RAF Fighter Command would allow the Germans to gain control of the skies over the invasion area. It was supposed that Bomber Command, RAF Coastal Command and the Royal Navy could not operate under conditions of German air superiority. | Why did the Luftwaffe bomb the RAF Fighter Command? | {'text': 'to gain air superiority', 'answer_start': 228} |
112,504 | 112,162 | 573054b8396df91900096081 | generic | Following various military conquests in the Greek East, Romans adapted a number of Greek educational precepts to their own fledgling system. They began physical training to prepare the boys to grow as Roman citizens and for eventual recruitment into the army. Conforming to discipline was a point of great emphasis. Girls generally received instruction from their mothers in the art of spinning, weaving, and sewing. Schooling in a more formal sense was begun around 200 BC. Education began at the age of around six, and in the next six to seven years, boys and girls were expected to learn the basics of reading, writing and counting. By the age of twelve, they would be learning Latin, Greek, grammar and literature, followed by training for public speaking. Oratory was an art to be practiced and learnt, and good orators commanded respect.[citation needed] | When did academic schooling begin in the Roman Republic? | {'text': 'around 200 BC', 'answer_start': 460} |
64,897 | 64,555 | 5ace4eb332bba1001ae4a240 | generic | The streets in downtown Ann Arbor conform to a grid pattern, though this pattern is less common in the surrounding areas. Major roads branch out from the downtown district like spokes on a wheel to the highways surrounding the city. The city is belted by three freeways: I-94, which runs along the southern portion of the city; U.S. Highway 23 (US 23), which primarily runs along the eastern edge of Ann Arbor; and M-14, which runs along the northern edge of the city. Other nearby highways include US 12, M-17, and M-153. Several of the major surface arteries lead to the I-94/M-14 interchange in the west, US 23 in the east, and the city's southern areas. The city also has a system of bike routes and paths and includes the nearly complete Washtenaw County Border-to-Border Trail. | Where is the I-49/M-14 interchange located? | {'text': 'west', 'answer_start': 602} |
71,090 | 70,748 | 5726e581f1498d1400e8ef29 | generic | A large indoor shopping centre Hoog Catharijne (nl) is located between Utrecht Centraal railway station and the city centre. The corridors are treated as public places like streets, and the route between the station and the city centre is open all night. In 20 years from 2004, parts of Hoog Catharijne will be redeveloped as part of the renovation of the larger station area. Parts of the city's network of canals, which were filled to create the shopping center and central station area, will be recreated. The Jaarbeurs, one of the largest convention centres in the Netherlands, is located at the west side of the central railway station. | how are the shopping center corridors treated | {'text': 'The corridors are treated as public places like streets, and the route between the station and the city centre is open all night', 'answer_start': 125} |
78,109 | 77,767 | 5727bed92ca10214002d9550 | generic | Pāśupata Shaivism (Pāśupata, "of Paśupati") is the oldest of the major Shaiva schools. The philosophy of Pashupata sect was systematized by Lakulish in the 2nd century CE. Paśu in Paśupati refers to the effect (or created world), the word designates that which is dependent on something ulterior. Whereas, Pati means the cause (or principium), the word designates the Lord, who is the cause of the universe, the pati, or the ruler. Pashupatas disapproved of Vaishnava theology, known for its doctrine servitude of souls to the Supreme Being, on the grounds that dependence upon anything could not be the means of cessation of pain and other desired ends. They recognised that those depending upon another and longing for independence will not be emancipated because they still depend upon something other than themselves. According to Pāśupatas, soul possesses the attributes of the Supreme Deity when it becomes liberated from the 'germ of every pain'. | What aspect of Vaishnava was unpalatable for the Pasupatas? | {'text': 'servitude of souls', 'answer_start': 501} |
36,926 | 36,584 | 5ad178b7645df0001a2d1d7d | generic | In January 2002, the U.S. sent more than 1,200 troops (later raised to 2,000) to assist the Armed Forces of the Philippines in combating terrorist groups linked to al-Qaida, such as Abu Sayyaf, under Operation Enduring Freedom - Philippines. Operations have taken place mostly in the Sulu Archipelago, where terrorists and other groups are active. The majority of troops provide logistics. However, there are special forces troops that are training and assisting in combat operations against the terrorist groups. | How many troops did the US initially send to the Koreas? | {'text': '1,200', 'answer_start': 41} |
38,721 | 38,379 | 570c3aa8ec8fbc190045bdff | generic | Barça's local rival has always been Espanyol. Blanc-i-blaus, being one of the clubs granted royal patronage, was founded exclusively by Spanish football fans, unlike the multinational nature of Barça's primary board. The founding message of the club was clearly anti-Barcelona, and they disapprovingly saw FC Barcelona as a team of foreigners. The rivalry was strengthened by what Catalonians saw as a provocative representative of Madrid. Their original ground was in the affluent district of Sarrià. | What club was granted royal patronage? | {'text': 'Blanc-i-blaus', 'answer_start': 46} |
68,597 | 68,255 | 5726e03fdd62a815002e9395 | generic | As cellular metabolism/energy production requires oxygen, potentially damaging (e.g., mutation causing) compounds known as free radicals can form. Most of these are oxidizers (i.e., acceptors of electrons) and some react very strongly. For the continued normal cellular maintenance, growth, and division, these free radicals must be sufficiently neutralized by antioxidant compounds. Recently, some researchers suggested an interesting theory of evolution of dietary antioxidants. Some are produced by the human body with adequate precursors (glutathione, Vitamin C), and those the body cannot produce may only be obtained in the diet via direct sources (Vitamin C in humans, Vitamin A, Vitamin K) or produced by the body from other compounds (Beta-carotene converted to Vitamin A by the body, Vitamin D synthesized from cholesterol by sunlight). Phytochemicals (Section Below) and their subgroup, polyphenols, make up the majority of antioxidants; about 4,000 are known. Different antioxidants are now known to function in a cooperative network. For example, Vitamin C can reactivate free radical-containing glutathione or Vitamin E by accepting the free radical itself. Some antioxidants are more effective than others at neutralizing different free radicals. Some cannot neutralize certain free radicals. Some cannot be present in certain areas of free radical development (Vitamin A is fat-soluble and protects fat areas, Vitamin C is water-soluble and protects those areas). When interacting with a free radical, some antioxidants produce a different free radical compound that is less dangerous or more dangerous than the previous compound. Having a variety of antioxidants allows any byproducts to be safely dealt with by more efficient antioxidants in neutralizing a free radical's butterfly effect. | What subgroup of phytochemicals helps make up the majority of the body's antioxidants? | {'text': 'polyphenols', 'answer_start': 898} |
83,493 | 83,151 | 5727cc873acd2414000decab | generic | Oklahoma is the 20th largest state in the United States, covering an area of 69,898 square miles (181,035 km2), with 68,667 square miles (177847 km2) of land and 1,281 square miles (3,188 km2) of water. It is one of six states on the Frontier Strip and lies partly in the Great Plains near the geographical center of the 48 contiguous states. It is bounded on the east by Arkansas and Missouri, on the north by Kansas, on the northwest by Colorado, on the far west by New Mexico, and on the south and near-west by Texas. | How many square miles of water is in Oklahoma? | {'text': '1,281', 'answer_start': 162} |
41,007 | 40,665 | 570da0f416d0071400510c17 | generic | If current trends continue, missiles will replace gun systems completely in "first line" service.[citation needed] Guns are being increasingly pushed into specialist roles, such as the Dutch Goalkeeper CIWS, which uses the GAU-8 Avenger 30 mm seven-barrel Gatling gun for last ditch anti-missile and anti-aircraft defence. Even this formerly front-line weapon is currently being replaced by new missile systems, such as the RIM-116 Rolling Airframe Missile, which is smaller, faster, and allows for mid-flight course correction (guidance) to ensure a hit. To bridge the gap between guns and missiles, Russia in particular produces the Kashtan CIWS, which uses both guns and missiles for final defence. Two six-barrelled 30 mm Gsh-6-30 Gatling guns and 9M311 surface-to-air missiles provide for its defensive capabilities. | What is likely to entirely replace gun systems? | {'text': 'missiles', 'answer_start': 28} |
43,521 | 43,179 | 570e38fd0b85d914000d7d95 | generic | At the end of the 16th century, the Aussa Sultanate was established in the Denkel lowlands of Eritrea. The polity had come into existence in 1577, when Muhammed Jasa moved his capital from Harar to Aussa (Asaita) with the split of the Adal Sultanate into Aussa and the Sultanate of Harar. At some point after 1672, Aussa declined in conjunction with Imam Umar Din bin Adam's recorded ascension to the throne. In 1734, the Afar leader Kedafu, head of the Mudaito clan, seized power and established the Mudaito Dynasty. This marked the start of a new and more sophisticated polity that would last into the colonial period. | When was the Aussa Sultanate established? | {'text': 'end of the 16th century', 'answer_start': 7} |
80,193 | 79,851 | 572800942ca10214002d9b17 | generic | In addition to limiting the total average power used by the device, the USB specification limits the inrush current (i.e., that used to charge decoupling and filter capacitors) when the device is first connected. Otherwise, connecting a device could cause problems with the host's internal power. USB devices are also required to automatically enter ultra low-power suspend mode when the USB host is suspended. Nevertheless, many USB host interfaces do not cut off the power supply to USB devices when they are suspended. | Many USB host interfaces do not what? | {'text': 'cut off the power supply to USB devices when they are suspended', 'answer_start': 457} |
44,432 | 44,090 | 570fb4715ab6b81900390fa0 | generic | In 1956, the British and French prime ministers, Sir Anthony Eden and Guy Mollet, discussed the possibility of France joining the Commonwealth. The proposal was never accepted and the following year France signed the Treaty of Rome, which established the European Economic Community, the precursor to the European Union. In November 1956, Britain and France invaded Egypt in an ultimately unsuccessful attempt to capture the Suez Canal. Lord Mountbatten claimed the Queen was opposed to the invasion, though Eden denied it. Eden resigned two months later. | To what was the European Economic Community the precurser? | {'text': 'European Union', 'answer_start': 305} |
94,846 | 94,504 | 5acfc30477cf76001a685d77 | generic | The relative reactivity of zinc and its ability to attract oxidation to itself makes it an efficient sacrificial anode in cathodic protection (CP). For example, cathodic protection of a buried pipeline can be achieved by connecting anodes made from zinc to the pipe. Zinc acts as the anode (negative terminus) by slowly corroding away as it passes electric current to the steel pipeline.[note 2] Zinc is also used to cathodically protect metals that are exposed to sea water from corrosion. A zinc disc attached to a ship's iron rudder will slowly corrode, whereas the rudder stays unattacked. Other similar uses include a plug of zinc attached to a propeller or the metal protective guard for the keel of the ship. | Why does zinc harm metals exposed to sea water? | {'text': 'will slowly corrode', 'answer_start': 536} |
123,910 | 123,568 | 5a848dab7cf838001a46a91e | generic | The roles and responsibilities of the minority leader are not well-defined. To a large extent, the functions of the minority leader are defined by tradition and custom. A minority leader from 1931 to 1939, Representative Bertrand Snell, R-N.Y., provided this "job description": "He is spokesman for his party and enunciates its policies. He is required to be alert and vigilant in defense of the minority's rights. It is his function and duty to criticize constructively the policies and programs of the majority, and to this end employ parliamentary tactics and give close attention to all proposed legislation." | What kind of tactics were usually used by the majority leader from 1931-1939? | {'text': 'parliamentary tactics', 'answer_start': 537} |
99,603 | 99,261 | 5a57d07a770dc0001aeefdb7 | generic | Hume divided all of human knowledge into two categories: relations of ideas and matters of fact (see also Kant's analytic-synthetic distinction). Mathematical and logical propositions (e.g. "that the square of the hypotenuse is equal to the sum of the squares of the two sides") are examples of the first, while propositions involving some contingent observation of the world (e.g. "the sun rises in the East") are examples of the second. All of people's "ideas", in turn, are derived from their "impressions". For Hume, an "impression" corresponds roughly with what we call a sensation. To remember or to imagine such impressions is to have an "idea". Ideas are therefore the faint copies of sensations. | What would the incorrect phrase "the sun rises in the west" be? | {'text': 'matters of fact', 'answer_start': 80} |
59,374 | 59,032 | 5726bb11708984140094cf7b | generic | Queen's last album featuring Mercury, titled Made in Heaven, was finally released in 1995, four years after his death. Featuring tracks such as "Too Much Love Will Kill You" and "Heaven for Everyone", it was constructed from Mercury's final recordings in 1991, material left over from their previous studio albums and re-worked material from May, Taylor, and Mercury's solo albums. The album also featured the song "Mother Love", the last vocal recording Mercury made prior to his death, which he completed using a drum machine, over which May, Taylor and Deacon later added the instrumental track. After completing the penultimate verse, Mercury had told the band he "wasn't feeling that great" and stated, "I will finish it when I come back, next time"; however, he never made it back into the studio, so May later recorded the final verse of the song. Both stages of recording, before and after Mercury's death, were completed at the band's studio in Montreux, Switzerland. The album reached No. 1 on the UK charts immediately following its release, and has sold 20 million copies worldwide. On 25 November 1996, a statue of Mercury was unveiled in Montreux overlooking Lake Geneva, almost five years to the day since his death. | What was Queen's final album featuring Mercury vocals compiled from earlier recordings called? | {'text': 'Made in Heaven', 'answer_start': 45} |
99,288 | 98,946 | 5ace4baa32bba1001ae4a1f8 | generic | The Northern Mariana Islands had become a Japanese protectorate before the war. It was the Chamorros from the Northern Marianas who were brought to Guam to serve as interpreters and in other capacities for the occupying Japanese force. The Guamanian Chamorros were treated as an occupied enemy by the Japanese military. After the war, this would cause resentment between the Guamanian Chamorros and the Chamorros of the Northern Marianas. Guam's Chamorros believed their northern brethren should have been compassionate towards them, whereas having been occupied for over 30 years, the Northern Mariana Chamorros were loyal to Japan. | Who were the Guamanian Chamorro loyal to? | {'text': 'Japan', 'answer_start': 627} |
105,416 | 105,074 | 5a845f1f7cf838001a46a79f | generic | A species can be listed in two ways. The United States Fish and Wildlife Service (FWS) or NOAA Fisheries (also called the National Marine Fisheries Service) can directly list a species through its candidate assessment program, or an individual or organizational petition may request that the FWS or NMFS list a species. A "species" under the act can be a true taxonomic species, a subspecies, or in the case of vertebrates, a "distinct population segment." The procedures are the same for both types except with the person/organization petition, there is a 90-day screening period. | Who does the FWS or NMFS have to petition to list a species? | {'text': 'an individual or organizational', 'answer_start': 230} |
84,377 | 84,035 | 57281fd84b864d19001644e3 | generic | In Lebanon, clashes between pro-Nasser factions and supporters of staunch Nasser opponent, then-President Camille Chamoun, culminated in civil strife by May. The former sought to unite with the UAR, while the latter sought Lebanon's continued independence. Nasser delegated oversight of the issue to Sarraj, who provided limited aid to Nasser's Lebanese supporters through money, light arms, and officer training—short of the large-scale support that Chamoun alleged. Nasser did not covet Lebanon, seeing it as a "special case", but sought to prevent Chamoun from a second presidential term. | What did Lebanese pro-Nasser groups want? | {'text': 'to unite with the UAR', 'answer_start': 176} |
44,873 | 44,531 | 57101dc2b654c5140001f80d | generic | One of the earliest sexual orientation classification schemes was proposed in the 1860s by Karl Heinrich Ulrichs in a series of pamphlets he published privately. The classification scheme, which was meant only to describe males, separated them into three basic categories: dionings, urnings and uranodionings. An urning can be further categorized by degree of effeminacy. These categories directly correspond with the categories of sexual orientation used today: heterosexual, homosexual, and bisexual. In the series of pamphlets, Ulrichs outlined a set of questions to determine if a man was an urning. The definitions of each category of Ulrichs' classification scheme are as follows: | What did these three categories correspond with? | {'text': 'the categories of sexual orientation used today:', 'answer_start': 414} |
44,251 | 43,909 | 5ad35c5e604f3c001a3fde85 | generic | During the war, plans were drawn up to quell Welsh nationalism by affiliating Elizabeth more closely with Wales. Proposals, such as appointing her Constable of Caernarfon Castle or a patron of Urdd Gobaith Cymru (the Welsh League of Youth), were abandoned for various reasons, which included a fear of associating Elizabeth with conscientious objectors in the Urdd, at a time when Britain was at war. Welsh politicians suggested that she be made Princess of Wales on her 18th birthday. Home Secretary, Herbert Morrison supported the idea, but the King rejected it because he felt such a title belonged solely to the wife of a Prince of Wales and the Prince of Wales had always been the heir apparent. In 1946, she was inducted into the Welsh Gorsedd of Bards at the National Eisteddfod of Wales. | In what year was the Welsh League of Youth established? | {'text': '1946', 'answer_start': 704} |
96,714 | 96,372 | 572a3c5c3f37b31900478803 | generic | Before the reforms of the 19th and 20th centuries, the state organisation of the Ottoman Empire was a simple system that had two main dimensions, which were the military administration and the civil administration. The Sultan was the highest position in the system. The civil system was based on local administrative units based on the region's characteristics. The Ottomans practiced a system in which the state (as in the Byzantine Empire) had control over the clergy. Certain pre-Islamic Turkish traditions that had survived the adoption of administrative and legal practices from Islamic Iran remained important in Ottoman administrative circles. According to Ottoman understanding, the state's primary responsibility was to defend and extend the land of the Muslims and to ensure security and harmony within its borders within the overarching context of orthodox Islamic practice and dynastic sovereignty. | Who had control over the clergy in the Ottoman empire? | {'text': 'the state', 'answer_start': 403} |
45,362 | 45,020 | 5ad36ba0604f3c001a3fe162 | generic | Dell was the first company to publicly state a timeline for the elimination of toxic polyvinyl chloride (PVC) and brominated flame retardants (BFRs), which it planned to phase out by the end of 2009. It revised this commitment and now aims to remove these toxics by the end of 2011 but only in its computing products. In March 2010, Greenpeace activists protested at Dell offices in Bangalore, Amsterdam and Copenhagen calling for Dell’s founder and CEO Michael Dell to ‘drop the toxics’ and claiming that Dell’s aspiration to be ‘the greenest technology company on the planet’ was ‘hypocritical’. Dell has launched its first products completely free of PVC and BFRs with the G-Series monitors (G2210 and G2410) in 2009. | What nontoxic chemical did Dell set to eliminate from its products? | {'text': 'polyvinyl chloride', 'answer_start': 85} |
47,009 | 46,667 | 5719ed4210f8ca1400304ead | generic | The Puget Sound Convergence Zone is an important feature of Seattle's weather. In the convergence zone, air arriving from the north meets air flowing in from the south. Both streams of air originate over the Pacific Ocean; airflow is split by the Olympic Mountains to Seattle's west, then reunited to the east. When the air currents meet, they are forced upward, resulting in convection. Thunderstorms caused by this activity are usually weak and can occur north and south of town, but Seattle itself rarely receives more than occasional thunder and small hail showers. The Hanukkah Eve Wind Storm in December 2006 is an exception that brought heavy rain and winds gusting up to 69 mph (111 km/h), an event that was not caused by the Puget Sound Convergence Zone and was widespread across the Pacific Northwest. | From where do the two streams of air come? | {'text': 'Pacific Ocean', 'answer_start': 208} |
58,598 | 58,256 | 5ad0b45d645df0001a2d00f3 | generic | Panama's first department stores such as Bazaar Francés, La Dalia and La Villa de Paris started as textile retailers at the turn of the nineteenth century. Later on in the twentieth century these eventually gave way to stores such as Felix B. Maduro, Sarah Panamá, Figali, Danté, Sears, Gran Morrison and smaller ones such as Bon Bini, Cocos, El Lider, Piccolo and Clubman among others. Of these only Felix B. Maduro (usually referred to as Felix by locals) and Danté remain strong. All the others have either folded or declined although Cocos has managed to secure a good position in the market. | How didn't Panama's department stores originally begin? | {'text': 'as textile retailers', 'answer_start': 96} |
64,336 | 63,994 | 57272b9d708984140094da97 | generic | The Bulgarian Empire was in decline by the 14th century, and the ascendancy of Serbia was marked by the Serbian victory over the Bulgarians in the Battle of Velbazhd in 1330. By 1346, the Serbian king Stefan Dušan had been proclaimed emperor. Yet Serbian dominance was short-lived; the Serbian army led by the Lazar Hrebljevanovic was defeated by the Ottomans at the Battle of Kosovo in 1389, where most of the Serbian nobility was killed and the south of the country came under Ottoman occupation, as much of southern Bulgaria had become Ottoman territory in 1371. Northern remnants of Bulgaria were finally conquered by 1396, Serbia fell in 1459, Bosnia in 1463, and Albania was finally subordinated in 1479 only a few years after the death of Skanderbeg. Belgrade, an Hungarian domain at the time, was the last large Balkan city to fall under Ottoman rule, in 1521. By the end of the medieval period, the entire Balkan peninsula was annexed by, or became vassal to, the Ottomans. | In what year did Belgrade fall to the Ottomans? | {'text': '1521', 'answer_start': 863} |
21,973 | 21,631 | 56e8fe7f0b45c0140094cdcb | generic | In June 2009 the first major building work at the abbey for 250 years was proposed. A corona—a crown-like architectural feature—was intended to be built around the lantern over the central crossing, replacing an existing pyramidal structure dating from the 1950s. This was part of a wider £23m development of the abbey expected to be completed in 2013. On 4 August 2010 the Dean and Chapter announced that, "[a]fter a considerable amount of preliminary and exploratory work", efforts toward the construction of a corona would not be continued. In 2012, architects Panter Hudspith completed refurbishment of the 14th-century food-store originally used by the abbey's monks, converting it into a restaurant with English Oak furniture by Covent Garden-based furniture makers Luke Hughes and Company. | What was proposed for the abbey in June 2009? | {'text': 'major building work', 'answer_start': 23} |
20,900 | 20,558 | 56e7a08700c9c71400d77413 | generic | Following the suspension of the AFL's 2009 season, league officials and owners of af2 (which had played its season as scheduled) began discussing the future of arena football and the two leagues. With its 50.1 percent ownership of af2, the AFL's bankruptcy and dissolution prompted the dissolution of af2 as well. That league was formally considered disbanded on September 8, 2009, when no owner committed his or her team to the league's eleventh season by that deadline. For legal reasons, af2 league officials and owners agreed to form a new legal entity, Arena Football 1 (AF1), with former AFL teams the Arizona Rattlers and Orlando Predators joining the former af2. | What percent of af2 was owned by the AFL? | {'text': '50.1', 'answer_start': 205} |
89,559 | 89,217 | 5728b62eff5b5019007da52d | generic | Estonia lies on the eastern shores of the Baltic Sea immediately across the Gulf of Finland from Finland on the level northwestern part of the rising East European platform between 57.3° and 59.5° N and 21.5° and 28.1° E. Average elevation reaches only 50 metres (164 ft) and the country's highest point is the Suur Munamägi in the southeast at 318 metres (1,043 ft). There is 3,794 kilometres (2,357 mi) of coastline marked by numerous bays, straits, and inlets. The number of islands and islets is estimated at some 2,355 (including those in lakes). Two of them are large enough to constitute separate counties: Saaremaa and Hiiumaa. A small, recent cluster of meteorite craters, the largest of which is called Kaali is found on Saaremaa, Estonia. | What is the average elevation of Estonia? | {'text': '50 metres (164 ft)', 'answer_start': 253} |
7,565 | 7,223 | 56d96b3edc89441400fdb431 | generic |
Malaysia: The event was held in the capital city, Kuala Lumpur, on April 21. The 16.5 km long-relay began from the historic Independence Square, passed in front of several city landmarks before coming to an end at the iconic Petronas Twin Towers. Among the landmarks the Olympic flame passed next to were the Parliament House, National Mosque, KL Tower and Merdeka Stadium. A team of 1000 personnel from the Malaysian police Special Action Squad guarded the event and escorted the torchbearers. The last time an Olympic torch relay was held in Malaysia was the 1964 Tokyo edition. | What is the capital city of Malaysia? | {'text': 'Kuala Lumpur', 'answer_start': 52} |
59,873 | 59,531 | 57265e04dd62a815002e82dc | generic | In 1930 Thuringia was one of the free states where the Nazis gained real political power. Wilhelm Frick was appointed Minister of the Interior for the state of Thuringia after the Nazi Party won six delegates to the Thuringia Diet. In this position he removed from the Thuringia police force anyone he suspected of being a republican and replaced them with men who were favourable towards the Nazi Party. He also ensured that whenever an important position came up within Thuringia, he used his power to ensure that a Nazi was given that post. | When did nazis gain power in Thuringia? | {'text': '1930', 'answer_start': 3} |
19,927 | 19,585 | 5a7baa9e21c2de001afea206 | generic | On June 18, 2009, the National Archives announced the launching of a YouTube channel "to showcase popular archived films, inform the public about upcoming events around the country, and bring National Archives exhibits to the people." Also in 2009, the National Archives launched a Flickr photostream to share portions of its photographic holdings with the general public. A new teaching with documents website premiered in 2010 and was developed by the education team. The website features 3,000 documents, images, and recordings from the holdings of the Archives. The site also features lesson plans and tools for creating new classroom activities and lessons. | On what date did YouTube begin showing videos online? | {'text': 'June 18, 2009', 'answer_start': 3} |
31,665 | 31,323 | 5ad42142604f3c001a400751 | generic | Located in the American South, Houston is a diverse city with a large and growing international community. The metropolitan area is home to an estimated 1.1 million (21.4 percent) residents who were born outside the United States, with nearly two-thirds of the area's foreign-born population from south of the United States–Mexico border. Additionally, more than one in five foreign-born residents are from Asia. The city is home to the nation's third-largest concentration of consular offices, representing 86 countries. | How many of the people who live in Texas were foreign born? | {'text': '1.1 million', 'answer_start': 153} |
117,219 | 116,877 | 5ad01c5d77cf76001a686a51 | generic | Kievan Rus' also played an important genealogical role in European politics. Yaroslav the Wise, whose stepmother belonged to the Macedonian dynasty, the greatest one to rule Byzantium, married the only legitimate daughter of the king who Christianized Sweden. His daughters became queens of Hungary, France and Norway, his sons married the daughters of a Polish king and a Byzantine emperor (not to mention a niece of the Pope), while his granddaughters were a German Empress and (according to one theory) the queen of Scotland. A grandson married the only daughter of the last Anglo-Saxon king of England. Thus the Rurikids were a well-connected royal family of the time. | Whose stepmother did not belong to a Macedonian dynasty? | {'text': 'Yaroslav the Wise', 'answer_start': 77} |
111,235 | 110,893 | 572fb308b2c2fd140056837b | generic | The classical period of Greek civilization covers a time spanning from the early 5th century BC to the death of Alexander the Great, in 323 BC (some authors prefer to split this period into 'Classical', from the end of the Persian wars to the end of the Peloponnesian War, and 'Fourth Century', up to the death of Alexander). It is so named because it set the standards by which Greek civilization would be judged in later eras. The Classical period is also described as the "Golden Age" of Greek civilization, and its art, philosophy, architecture and literature would be instrumental in the formation and development of Western culture. | What did the Greeks do that made it possible for the expansion and growth of the opposite of the Eastern Civilization ? | {'text': 'civilization, and its art, philosophy, architecture and literature would be instrumental in the formation and development of Western culture.', 'answer_start': 497} |
27,670 | 27,328 | 56fad4558f12f319006301d2 | generic | Somali people in the Horn of Africa are divided among different countries (Somalia, Djibouti, Ethiopia, and northeastern Kenya) that were artificially and some might say arbitrarily partitioned by the former imperial powers. Pan-Somalism is an ideology that advocates the unification of all ethnic Somalis once part of Somali empires such as the Ajuran Empire, the Adal Sultanate, the Gobroon Dynasty and the Dervish State under one flag and one nation. The Siad Barre regime actively promoted Pan-Somalism, which eventually led to the Ogaden War between Somalia on one side, and Ethiopia, Cuba and the Soviet Union on the other. | In what geographic portion of Kenya can Somali people be found? | {'text': 'northeastern', 'answer_start': 108} |
91,315 | 90,973 | 57299e233f37b319004784ff | generic | Pollination is the process by which pollen is transferred in the reproduction of plants, thereby enabling fertilisation and sexual reproduction. Most flowering plants require an animal to do the transportation. While other animals are included as pollinators, the majority of pollination is done by insects. Because insects usually receive benefit for the pollination in the form of energy rich nectar it is a grand example of mutualism. The various flower traits (and combinations thereof) that differentially attract one type of pollinator or another are known as pollination syndromes. These arose through complex plant-animal adaptations. Pollinators find flowers through bright colorations, including ultraviolet, and attractant pheromones. The study of pollination by insects is known as anthecology. | Pollen transferred in the reproduction of plants is called? | {'text': 'Pollination', 'answer_start': 0} |
41,493 | 41,151 | 570d5555b3d812140066d6db | generic | The decline of the city reached its nadir with the War of Spanish Succession (1702–1709) that marked the end of the political and legal independence of the Kingdom of Valencia. During the War of the Spanish Succession, Valencia sided with Charles of Austria. On 24 January 1706, Charles Mordaunt, 3rd Earl of Peterborough, 1st Earl of Monmouth, led a handful of English cavalrymen into the city after riding south from Barcelona, capturing the nearby fortress at Sagunt, and bluffing the Spanish Bourbon army into withdrawal. | When did English cavalry enter Valencia? | {'text': '24 January 1706', 'answer_start': 262} |
101,800 | 101,458 | 572e84dcdfa6aa1500f8d07a | generic | After the war, Feynman declined an offer from the Institute for Advanced Study in Princeton, New Jersey, despite the presence there of such distinguished faculty members as Albert Einstein, Kurt Gödel and John von Neumann. Feynman followed Hans Bethe, instead, to Cornell University, where Feynman taught theoretical physics from 1945 to 1950. During a temporary depression following the destruction of Hiroshima by the bomb produced by the Manhattan Project, he focused on complex physics problems, not for utility, but for self-satisfaction. One of these was analyzing the physics of a twirling, nutating dish as it is moving through the air. His work during this period, which used equations of rotation to express various spinning speeds, proved important to his Nobel Prize–winning work, yet because he felt burned out and had turned his attention to less immediately practical problems, he was surprised by the offers of professorships from other renowned universities. | Where did Feyman accept a job after the war? | {'text': 'Cornell University', 'answer_start': 264} |
43,620 | 43,278 | 5ad11b91645df0001a2d0dac | generic | Uranium is a naturally occurring element that can be found in low levels within all rock, soil, and water. Uranium is the 51st element in order of abundance in the Earth's crust. Uranium is also the highest-numbered element to be found naturally in significant quantities on Earth and is almost always found combined with other elements. Along with all elements having atomic weights higher than that of iron, it is only naturally formed in supernovae. The decay of uranium, thorium, and potassium-40 in the Earth's mantle is thought to be the main source of heat that keeps the outer core liquid and drives mantle convection, which in turn drives plate tectonics. | Where does uranium rank among elements in terms of its abundance in the Earth's atmosphere? | {'text': '51st', 'answer_start': 122} |
122,870 | 122,528 | 5731d7dbe99e3014001e6329 | generic | The "religious test" clause has been interpreted to cover both elected officials and appointed ones, career civil servants as well as political appointees. Religious beliefs or the lack of them have therefore not been permissible tests or qualifications with regard to federal employees since the ratification of the Constitution. Seven states, however, have language included in their Bill of Rights, Declaration of Rights, or in the body of their constitutions that require state office-holders to have particular religious beliefs, though some of these have been successfully challenged in court. These states are Texas, Massachusetts, Maryland, North Carolina, Pennsylvania, South Carolina, and Tennessee. | What do states violate the clause require state office-holders to possess? | {'text': 'particular religious beliefs', 'answer_start': 505} |
101,016 | 100,674 | 572f7951a23a5019007fc65f | generic | British post-punk entered the 1980s with support from members of the critical community—American critic Greil Marcus characterised "Britain's postpunk pop avant-garde" in a 1980 Rolling Stone article as "sparked by a tension, humour and sense of paradox plainly unique in present day pop music"—as well as media figures such as BBC DJ John Peel, while several groups, such as PiL and Joy Division, achieved some success in the popular charts. The network of supportive record labels that included Industrial, Fast, E.G., Mute, Axis/4AD and Glass continued to facilitate a large output of music, by artists such as the Raincoats, Essential Logic, Killing Joke, the Teardrop Explodes, and the Psychedelic Furs. | When did British post-punk emerge? | {'text': '1980s', 'answer_start': 30} |
71,844 | 71,502 | 572722c0708984140094da57 | generic | In single phase squirrel cage motors, the primary winding within the motor housing is not capable of starting a rotational motion on the rotor, but is capable of sustaining one. To start the motor, a secondary "start" winding has a series non-polarized starting capacitor to introduce a lead in the sinusoidal current. When the secondary (start) winding is placed at an angle with respect to the primary (run) winding, a rotating electric field is created. The force of the rotational field is not constant, but is sufficient to start the rotor spinning. When the rotor comes close to operating speed, a centrifugal switch (or current-sensitive relay in series with the main winding) disconnects the capacitor. The start capacitor is typically mounted to the side of the motor housing. These are called capacitor-start motors, that have relatively high starting torque. Typically they can have up-to four times as much starting torque than a split-phase motor and are used on applications such as compressors, pressure washers and any small device requiring high starting torques. | Where is the start capacitor commonly mounted? | {'text': 'to the side of the motor housing', 'answer_start': 752} |
122,508 | 122,166 | 5731b8df0fdd8d15006c649a | generic | In June 2007, YouTube began trials of a system for automatic detection of uploaded videos that infringe copyright. Google CEO Eric Schmidt regarded this system as necessary for resolving lawsuits such as the one from Viacom, which alleged that YouTube profited from content that it did not have the right to distribute. The system, which became known as Content ID, creates an ID File for copyrighted audio and video material, and stores it in a database. When a video is uploaded, it is checked against the database, and flags the video as a copyright violation if a match is found. | What is the name of the system that automatically detects copyright violations? | {'text': 'Content ID', 'answer_start': 354} |
118,996 | 118,654 | 5730ebd0497a881900248a49 | generic | On 5 June 2008, Secretary of Defense Robert Gates, accepted the resignations of both the Secretary of the Air Force, Michael Wynne, and the Chief of Staff of the United States Air Force, General T. Michael Moseley. Gates in effect fired both men for "systemic issues associated with declining Air Force nuclear mission focus and performance." This followed an investigation into two embarrassing incidents involving mishandling of nuclear weapons: specifically a nuclear weapons incident aboard a B-52 flight between Minot AFB and Barksdale AFB, and an accidental shipment of nuclear weapons components to Taiwan. The resignations were also the culmination of disputes between the Air Force leadership, populated primarily by non-nuclear background fighter pilots, versus Gates. To put more emphasis on nuclear assets, the USAF established the nuclear-focused Air Force Global Strike Command on 24 October 2008. | Who was Robert Gates? | {'text': 'Secretary of Defense', 'answer_start': 16} |
69,777 | 69,435 | 5726c8445951b619008f7df4 | generic | Meanwhile, he had written to Abu Ya'far, the prefect of the dynamic city of Isfahan, offering his services. The new emir of Hamadan, hearing of this correspondence and discovering where Ibn Sina was hiding, incarcerated him in a fortress. War meanwhile continued between the rulers of Isfahan and Hamadãn; in 1024 the former captured Hamadan and its towns, expelling the Tajik mercenaries. When the storm had passed, Ibn Sina returned with the emir to Hamadan, and carried on his literary labors. Later, however, accompanied by his brother, a favorite pupil, and two slaves, Ibn Sina escaped from the city in the dress of a Sufi ascetic. After a perilous journey, they reached Isfahan, receiving an honorable welcome from the prince. | What mercenaries were expelled after Isfahan's victory over Hamadan? | {'text': 'the Tajik', 'answer_start': 367} |
5,885 | 5,543 | 56d2415fb329da140004ec7c | generic | Once the meditator achieves a strong and powerful concentration (jhāna, Sanskrit ध्यान dhyāna), his mind is ready to penetrate and gain insight (vipassanā) into the ultimate nature of reality, eventually obtaining release from all suffering. The cultivation of mindfulness is essential to mental concentration, which is needed to achieve insight. | What is powerful concentration called? | {'text': 'jhāna', 'answer_start': 65} |
73,797 | 73,455 | 5a8ca838fd22b3001a8d8cdd | generic | Almost 60 years later, 80 year old career criminal Henry (Harry) James Burge claimed to have committed the theft, confessing to a newspaper, with the story being published in the Sunday Pictorial newspaper on 23 February 1958. He claimed to have carried out the robbery with two other men, although when discrepancies with a contemporaneous report in the Birmingham Post newspaper (the crime pre-dated written police reports) in his account of the means of entry and other items stolen, detectives decided there was no realistic possibility of a conviction and the case was closed. Burge claimed the cup had been melted down to make counterfeit half-crown coins, which matched known intelligence of the time, in which stolen silver was being used to forge coins which were then laundered through betting shops at a local racecourse, although Burge had no past history of forgery in a record of 42 previous convictions for which he had spent 42 years in prison. He had been further imprisoned in 1957 for seven years for theft from cars. Released in 1961, he died in 1964. | What made detectives decide there was a possibility of conviction? | {'text': 'his account of the means of entry and other items stolen', 'answer_start': 429} |
104,717 | 104,375 | 5ad42047604f3c001a4006ef | generic | Investment in the city continued. The William Enston Home, a planned community for the city's aged and infirm, was built in 1889. An elaborate public building, the United States Post Office and Courthouse, was completed by the federal government in 1896 in the heart of the city. The Democrat-dominated state legislature passed a new constitution in 1895 that disfranchised blacks, effectively excluding them entirely from the political process, a second-class status that was maintained for more than six decades in a state that was majority black until about 1930. | The William Enston Home was destroyed in what year? | {'text': '1889', 'answer_start': 124} |
82,752 | 82,410 | 5ad2b649d7d075001a429ffe | generic | The foundation of Northwestern University is traceable to a meeting on May 31, 1850 of nine prominent Chicago businessmen, Methodist leaders and attorneys who had formed the idea of establishing a university to serve what had once been known as the Northwest Territory. On January 28, 1851, the Illinois General Assembly granted a charter to the Trustees of the North-Western University, making it the first chartered university in Illinois. The school's nine founders, all of whom were Methodists (three of them ministers), knelt in prayer and worship before launching their first organizational meeting. Although they affiliated the university with the Methodist Episcopal Church, they were committed to non-sectarian admissions, believing that Northwestern should serve all people in the newly developing territory. | What was the date that lay down the foundation for Southwestern University? | {'text': 'May 31, 1850', 'answer_start': 71} |
1,964 | 1,622 | 56cd8d2162d2951400fa66cc | generic | Despite this glowing message by the Emperor, Chan writes that a year later in 1446, the Ming court cut off all relations with the Karmapa hierarchs. Until then, the court was unaware that Deshin Shekpa had died in 1415. The Ming court had believed that the representatives of the Karma Kagyu who continued to visit the Ming capital were sent by the Karmapa. | Who did the Ming cut off all relations with? | {'text': 'the Karmapa hierarchs', 'answer_start': 126} |
64,375 | 64,033 | 5ad0212077cf76001a686b06 | generic | Around 1300–1350 the Medieval Warm Period gave way to the Little Ice Age. The colder climate resulted in agricultural crises, the first of which is known as the Great Famine of 1315-1317. The demographic consequences of this famine, however, were not as severe as the plagues that occurred later in the century, particularly the Black Death. Estimates of the death rate caused by this epidemic range from one third to as much as sixty percent. By around 1420, the accumulated effect of recurring plagues and famines had reduced the population of Europe to perhaps no more than a third of what it was a century earlier. The effects of natural disasters were exacerbated by armed conflicts; this was particularly the case in France during the Hundred Years' War. | When did the Medieval Warm Period start? | {'text': '1300–1350', 'answer_start': 7} |
48,835 | 48,493 | 571aa25310f8ca1400305205 | generic | In 680 Ibn al-Zubayr fled Medina for Mecca. Hearing about Husayn's opposition to Yazid I, the people of Kufa sent to Husayn asking him to take over with their support. Al-Husayn sent his cousin Muslim bin Agail to verify if they would rally behind him. When the news reached Yazid I, he sent Ubayd-Allah bin Ziyad, ruler of Basrah, with the instruction to prevent the people of Kufa rallying behind Al-Husayn. Ubayd-Allah bin Ziyad managed to disperse the crowd that gathered around Muslim bin Agail and captured him. Realizing Ubayd-Allah bin Ziyad had been instructed to prevent Husayn from establishing support in Kufa, Muslim bin Agail requested a message to be sent to Husayn to prevent his immigration to Kufa. The request was denied and Ubayd-Allah bin Ziyad killed Muslim bin Agail. While Ibn al-Zubayr would stay in Mecca until his death, Husayn decided to travel on to Kufa with his family, unaware of the lack of support there. Husayn and his family were intercepted by Yazid I's forces led by Amru bin Saad, Shamar bin Thi Al-Joshan, and Hussain bin Tamim, who fought Al-Husayn and his male family members until they were killed. There were 200 people in Husayn's caravan, many of whom were women, including his sisters, wives, daughters and their children. The women and children from Husayn's camp were taken as prisoners of war and led back to Damascus to be presented to Yazid I. They remained imprisoned until public opinion turned against him as word of Husayn's death and his family's capture spread. They were then granted passage back to Medina. The sole adult male survivor from the caravan was Ali ibn Husayn who was with fever too ill to fight when the caravan was attacked. | Where did Ibn al-Zubayr flee to in 680? | {'text': 'Mecca', 'answer_start': 37} |
15,975 | 15,633 | 56e074547aa994140058e4ff | generic | The term aspiration sometimes refers to the sound change of debuccalization, in which a consonant is lenited (weakened) to become a glottal stop or fricative [ʔ h ɦ]. | What is another term for a consonant being weakened? | {'text': 'lenited', 'answer_start': 101} |
8,663 | 8,321 | 5acfc68777cf76001a685eaa | generic | The latter in effect allows the government to appeal the opposition of parliament to the electorate. However, in many jurisdictions a head of state may refuse a parliamentary dissolution, requiring the resignation of the prime minister and his or her government. In most modern parliamentary systems, the prime minister is the person who decides when to request a parliamentary dissolution. | who has the power to disolve parliment? | {'text': 'head of state', 'answer_start': 134} |
29,078 | 28,736 | 5705ede675f01819005e7785 | generic | The Times used contributions from significant figures in the fields of politics, science, literature, and the arts to build its reputation. For much of its early life, the profits of The Times were very large and the competition minimal, so it could pay far better than its rivals for information or writers. Beginning in 1814, the paper was printed on the new steam-driven cylinder press developed by Friedrich Koenig. In 1815, The Times had a circulation of 5,000. | Who developed the new press type in 1814 for The Times? | {'text': 'Friedrich Koenig', 'answer_start': 402} |
62,788 | 62,446 | 57267902dd62a815002e8649 | generic | The Lempel–Ziv (LZ) compression methods are among the most popular algorithms for lossless storage. DEFLATE is a variation on LZ optimized for decompression speed and compression ratio, but compression can be slow. DEFLATE is used in PKZIP, Gzip and PNG. LZW (Lempel–Ziv–Welch) is used in GIF images. Also noteworthy is the LZR (Lempel-Ziv–Renau) algorithm, which serves as the basis for the Zip method.[citation needed] LZ methods use a table-based compression model where table entries are substituted for repeated strings of data. For most LZ methods, this table is generated dynamically from earlier data in the input. The table itself is often Huffman encoded (e.g. SHRI, LZX). Current LZ-based coding schemes that perform well are Brotli and LZX. LZX is used in Microsoft's CAB format. | What is used in PKZIP, Gzip and PNG? | {'text': 'DEFLATE', 'answer_start': 215} |
23,381 | 23,039 | 56f709cd711bf01900a44901 | generic | The end of a treaty, the eschatocol (or closing protocol), is often signaled by a clause like "in witness whereof" or "in faith whereof," the parties have affixed their signatures, followed by the words "DONE at," then the site(s) of the treaty's execution and the date(s) of its execution. The date is typically written in its most formal, longest possible form. For example, the Charter of the United Nations was "DONE at the city of San Francisco the twenty-sixth day of June, one thousand nine hundred and forty-five." If the treaty is executed in multiple copies in different languages, that fact is always noted, and is followed by a stipulation that the versions in different languages are equally authentic. | What typically follows the signatures in a treaty? | {'text': "the site(s) of the treaty's execution and the date(s)", 'answer_start': 219} |
41,793 | 41,451 | 5acecfac32bba1001ae4b4fc | generic | By the twentieth century, the U.S. Army had mobilized the U.S. Volunteers on four separate occasions during each of the major wars of the nineteenth century. During World War I, the "National Army" was organized to fight the conflict, replacing the concept of U.S. Volunteers. It was demobilized at the end of World War I, and was replaced by the Regular Army, the Organized Reserve Corps, and the State Militias. In the 1920s and 1930s, the "career" soldiers were known as the "Regular Army" with the "Enlisted Reserve Corps" and "Officer Reserve Corps" augmented to fill vacancies when needed. | Who filled vacancies for militias? | {'text': 'Enlisted Reserve Corps" and "Officer Reserve Corps', 'answer_start': 503} |
70,161 | 69,819 | 5726e2fcf1498d1400e8eea2 | generic | The use of such contractions is as old as Chinese characters themselves, and they have frequently been found in religious or ritual use. In the Oracle Bone script, personal names, ritual items, and even phrases such as 受又(祐) shòu yòu "receive blessings" are commonly contracted into single characters. A dramatic example is that in medieval manuscripts 菩薩 púsà "bodhisattva" (simplified: 菩萨) is sometimes written with a single character formed of a 2×2 grid of four 十 (derived from the grass radical over two 十). However, for the sake of consistency and standardization, the CPC seeks to limit the use of such polysyllabic characters in public writing to ensure that every character only has one syllable. | What have been constantly found in religious or ritual use? | {'text': 'Chinese characters', 'answer_start': 42} |
31,499 | 31,157 | 5709c7d4ed30961900e84497 | generic | The Houston–The Woodlands–Sugar Land metropolitan area is served by one public television station and two public radio stations. KUHT (HoustonPBS) is a PBS member station and is the first public television station in the United States. Houston Public Radio is listener-funded and comprises two NPR member stations: KUHF (KUHF News) and KUHA (Classical 91.7). KUHF is news/talk radio and KUHA is a classical music station. The University of Houston System owns and holds broadcasting licenses to KUHT, KUHF, and KUHA. The stations broadcast from the Melcher Center for Public Broadcasting, located on the campus of the University of Houston. | From what building do the two public radio stations broadcast? | {'text': 'Melcher Center for Public Broadcasting', 'answer_start': 549} |
109,950 | 109,608 | 5a8c90e0fd22b3001a8d8b31 | generic | Database transactions can be used to introduce some level of fault tolerance and data integrity after recovery from a crash. A database transaction is a unit of work, typically encapsulating a number of operations over a database (e.g., reading a database object, writing, acquiring lock, etc.), an abstraction supported in database and also other systems. Each transaction has well defined boundaries in terms of which program/code executions are included in that transaction (determined by the transaction's programmer via special transaction commands). | What has no ability to recover from a crash? | {'text': 'data integrity', 'answer_start': 81} |
81,796 | 81,454 | 5a60d783e9e1cc001a33cd8e | generic | The Sahara is the world's largest low-latitude hot desert. The area is located in the horse latitudes under the subtropical ridge, a significant belt of semi-permanent subtropical warm-core high pressure where the air from upper levels of the troposphere tends to sink towards the ground. This steady descending airflow causes a warming and a drying effect in the upper troposphere. The sinking air prevents evaporating water from rising and, therefore, prevents the adiabatic cooling, which makes cloud formation extremely difficult to nearly impossible. | What is the largest high latitude desert? | {'text': 'Sahara', 'answer_start': 4} |
84,107 | 83,765 | 5728c6a52ca10214002da79b | generic | During this period, Bengal witnessed an intellectual awakening that is in some way similar to the Renaissance in Europe during the 16th century, although Europeans of that age were not confronted with the challenge and influence of alien colonialism. This movement questioned existing orthodoxies, particularly with respect to women, marriage, the dowry system, the caste system, and religion. One of the earliest social movements that emerged during this time was the Young Bengal movement, which espoused rationalism and atheism as the common denominators of civil conduct among upper caste educated Hindus. It played an important role in reawakening Indian minds and intellect across the sub-continent. | What did the Movement question? | {'text': 'existing orthodoxies', 'answer_start': 276} |
20,803 | 20,461 | 56e797a637bdd419002c41cb | generic | Jim Foster, a promotions manager with the National Football League, conceived of indoor football while watching an indoor soccer match at Madison Square Garden in 1981. While at the game, he wrote his idea on a 9x12 envelope, with sketches of the field and notes on gameplay. He presented the idea to a few friends at the NFL offices, where he received praise and encouragement for his concept. After solidifying the rules and a business plan, and supplemented with sketches by a professional artist, Foster presented his idea to various television networks. He reached an agreement with NBC for a "test game". | Where was Jim Foster when he came up with the idea for arena football? | {'text': 'Madison Square Garden', 'answer_start': 138} |
14,566 | 14,224 | 56dfc4ba231d4119001abdcf | generic | Alexander Graham Bell was ranked 57th among the 100 Greatest Britons (2002) in an official BBC nationwide poll, and among the Top Ten Greatest Canadians (2004), and the 100 Greatest Americans (2005). In 2006 Bell was also named as one of the 10 greatest Scottish scientists in history after having been listed in the National Library of Scotland's 'Scottish Science Hall of Fame'. Bell's name is still widely known and used as part of the names of dozens of educational institutes, corporate namesakes, street and place names around the world. | In what Scottish Hall of Fame is Bell listed? | {'text': 'Scottish Science Hall of Fame', 'answer_start': 349} |
110,948 | 110,606 | 5ace7e1b32bba1001ae4a813 | generic | Unpopulated boards are usually bare-board tested for "shorts" and "opens". A short is a connection between two points that should not be connected. An open is a missing connection between points that should be connected. For high-volume production a fixture or a rigid needle adapter is used to make contact with copper lands on the board. Building the adapter is a significant fixed cost and is only economical for high-volume or high-value production. For small or medium volume production flying probe testers are used where test probes are moved over the board by an XY drive to make contact with the copper lands. The CAM system instructs the electrical tester to apply a voltage to each contact point as required and to check that this voltage appears on the appropriate contact points and only on these. | A closed is a missing connection between what? | {'text': 'points that should be connected', 'answer_start': 188} |
110,754 | 110,412 | 572fd85704bcaa1900d76dbc | generic | Classification seeks to describe the diversity of bacterial species by naming and grouping organisms based on similarities. Bacteria can be classified on the basis of cell structure, cellular metabolism or on differences in cell components, such as DNA, fatty acids, pigments, antigens and quinones. While these schemes allowed the identification and classification of bacterial strains, it was unclear whether these differences represented variation between distinct species or between strains of the same species. This uncertainty was due to the lack of distinctive structures in most bacteria, as well as lateral gene transfer between unrelated species. Due to lateral gene transfer, some closely related bacteria can have very different morphologies and metabolisms. To overcome this uncertainty, modern bacterial classification emphasizes molecular systematics, using genetic techniques such as guanine cytosine ratio determination, genome-genome hybridization, as well as sequencing genes that have not undergone extensive lateral gene transfer, such as the rRNA gene. Classification of bacteria is determined by publication in the International Journal of Systematic Bacteriology, and Bergey's Manual of Systematic Bacteriology. The International Committee on Systematic Bacteriology (ICSB) maintains international rules for the naming of bacteria and taxonomic categories and for the ranking of them in the International Code of Nomenclature of Bacteria. | Can classification be helpful in determining differences between distinct species? | {'text': 'unclear', 'answer_start': 395} |
81,611 | 81,269 | 5727f60f3acd2414000df0e3 | generic | Immanuel Kant (1724–1804) has formulated an individualist definition of "enlightenment" similar to the concept of bildung: "Enlightenment is man's emergence from his self-incurred immaturity." He argued that this immaturity comes not from a lack of understanding, but from a lack of courage to think independently. Against this intellectual cowardice, Kant urged: Sapere aude, "Dare to be wise!" In reaction to Kant, German scholars such as Johann Gottfried Herder (1744–1803) argued that human creativity, which necessarily takes unpredictable and highly diverse forms, is as important as human rationality. Moreover, Herder proposed a collective form of bildung: "For Herder, Bildung was the totality of experiences that provide a coherent identity, and sense of common destiny, to a people." | Which German scholar argued that human creativity takes diverse forms and is as important as human rationality? | {'text': 'Johann Gottfried Herder', 'answer_start': 441} |
87,224 | 86,882 | 5a32f95bbd0d7f001aef953c | generic | Agriculture is dominated by the cultivation and sale of food crops such as cassava, peanuts, maize, sorghum, millet, sesame, and plantain. The annual real GDP growth rate is just above 3%. The importance of food crops over exported cash crops is indicated by the fact that the total production of cassava, the staple food of most Central Africans, ranges between 200,000 and 300,000 tonnes a year, while the production of cotton, the principal exported cash crop, ranges from 25,000 to 45,000 tonnes a year. Food crops are not exported in large quantities, but still constitute the principal cash crops of the country, because Central Africans derive far more income from the periodic sale of surplus food crops than from exported cash crops such as cotton or coffee.[citation needed] Much of the country is self-sufficient in food crops; however, livestock development is hindered by the presence of the tsetse fly.[citation needed] | What is the real exported cash crop rate? | {'text': 'just above 3%', 'answer_start': 174} |
35,904 | 35,562 | 5a0367eeaf157d001818f3b8 | generic | Lancashire is smaller than its historical extent following a major reform of local government. In 1889, the administrative county of Lancashire was created, covering the historical county except for the county boroughs such as Blackburn, Burnley, Barrow-in-Furness, Preston, Wigan, Liverpool and Manchester. The area served by the Lord-Lieutenant (termed now a ceremonial county) covered the entirety of the administrative county and the county boroughs, and was expanded whenever boroughs annexed areas in neighbouring counties such as Wythenshawe in Manchester south of the River Mersey and historically in Cheshire, and southern Warrington. It did not cover the western part of Todmorden, where the ancient border between Lancashire and Yorkshire passes through the middle of the town. | What county lies north of the River Mersey? | {'text': 'Cheshire', 'answer_start': 609} |
71,852 | 71,510 | 572723b8dd62a815002e9957 | generic | Capacitors may retain a charge long after power is removed from a circuit; this charge can cause dangerous or even potentially fatal shocks or damage connected equipment. For example, even a seemingly innocuous device such as a disposable-camera flash unit, powered by a 1.5 volt AA battery, has a capacitor which may contain over 15 joules of energy and be charged to over 300 volts. This is easily capable of delivering a shock. Service procedures for electronic devices usually include instructions to discharge large or high-voltage capacitors, for instance using a Brinkley stick. Capacitors may also have built-in discharge resistors to dissipate stored energy to a safe level within a few seconds after power is removed. High-voltage capacitors are stored with the terminals shorted, as protection from potentially dangerous voltages due to dielectric absorption or from transient voltages the capacitor may pick up from static charges or passing weather events. | How are the terminals of high voltage capacitors stored? | {'text': 'with the terminals shorted', 'answer_start': 763} |
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