import json
from typing import Any

class DynamicLearner:
    """Learns from file contents to improve response accuracy"""
    def __init__(self):
        self.knowledge_base = {}

    def learn_from_file(self, file_path: str):
        """Learn from the contents of the provided file"""
        with open(file_path, 'r') as file:
            data = json.load(file)
            for key, value in data.items():
                self.knowledge_base[key] = value

    def get_knowledge(self, key: str) -> Any:
        """Retrieve knowledge based on the key"""
        return self.knowledge_base.get(key)