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

Q: What is the country of origin of the cheese called caerphilly?

A: caerphilly cheese
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Q: Of all the actors who played Doctor Who in the TV series of the same name, who appeared in the most episodes?

A: doctor who
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Q: Who, before being awarded the Nobel Prize in Literature for 2003, was the first author to be awarded the Booker Prize twice?

A:
man booker prize
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