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

Q: Who stars in the TV series Californication?

A: californication
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Q: In book and film, which vessel was commanded by Charlie Allnut?

A: charlie allnut
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Q: Which bandleader married both Ava Gardner and Lana Turner?

A:
ava gardner
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