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

[EX Q]: Who won a Gold Medal for Britain in the men's 100 metres at the 1992 Summer Olympic Games in Barcelona?
[EX A]: britain

[EX Q]: Which horse won the 2008 Grand National?
[EX A]: 2008 grand national

[EX Q]: Which famous book features the character of Bob Cratchit?
[EX A]:
bob cratchit