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

Q: What currency is used on Christmas Island?

A: christmas island
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Q: Which sprinter lit the Olympic flame at the 2000 Summer Olympic Games in Australia?

A: 2000 summer olympics
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Q: Which nineteenth century conflict is the background to the novel 'Cold Mountain' by Charles Frazier?

A:
cold mountain
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