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

[EX Q]: Who succeeded Henry Cooper as British Heavyweight Boxing Champion?
[EX A]: boxing

[EX Q]: In which famous film did Michael Caine play a character named Charlie Croker?
[EX A]: charlie croker

[EX Q]: Dmitri Mendeleev is credited with the first version of which 'table'?
[EX A]:
dmitri mendeleev