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

Q: Ageusia is the loss of which sense?

A: ageusia
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Q: Who hosted Call My Bluff?

A: call my bluff
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Q: Which Union leader of the American Civil War gave his name to a tree in California's 'Sequoia National Park'?

A:
american civil war
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