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

Q: Chris Martin is the lead vocalist and rhythm guitarist with which group?

A: chris martin
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Q: Name the town in California where Clint Eastwood was elected mayor in 1986.?

A: clint eastwood
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Q: What is the only country whose homeland spans Africa and Asia?

A:
asia
****