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

Example Input: Chris Martin is the lead singer with which band who had several hits in the 2000s?
Example Output: chris martin

Example Input: In which wars did the battles of Towton and Barnet take place?
Example Output: battle of barnet

Example Input: The Allan Border medal is awarded annually for which sport?
Example Output:
allan border