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

Example Input: According to the bible, Zaccariah was the father of which New Testament figure?
Example Output: bible

Example Input: The site of the 1461 Battle of Mortimer's Cross lies in which English county?
Example Output: battle of mortimer's cross

Example Input: Which British Prime Minister said 'A week is a long time in politics'?
Example Output:
prime minister of the united kingdom