Update app.py

app.py

@@ -243,7 +243,7 @@ def generate_text(df, country, theme):
     Now, using the following data for {theme} in {country}, describe the adverse growth:
     {row_str}
     The topic is {theme}.
-    Describe by highlighting changes between the years. Accurately describe whether the values increase or decrease, include the cumulative result, and reflect the data as it appears.
+    Describe by highlighting changes between those three years. Accurately describe whether the values increase or decrease, include the cumulative result, and reflect the data as it appears, especially the sign of the value.
     """