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

[EX Q]: What American swimmer won eight gold medals at the 2008 Olympics?
[EX A]: 2008 summer olympics

[EX Q]: Who was the scheming wife of the Roman emperor Claudius?
[EX A]: claudius

[EX Q]: In which Beatles song does 'the barber shave another customer'?
[EX A]:
the beatles