Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Example Input: Who won a Gold Medal for Britain in the men's 100 metres at the 1992 Summer Olympic Games in Barcelona?
Example Output: britain

Example Input: The town of Anthony in which US state was known as 'The Leap Year Capital of the World'?
Example Output: united states

Example Input: Name the Town and Country where Christopher Columbus was born?
Example Output:
christopher columbus