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

Q: What style of facial hair was famously worn by American Civil War general Ambrose Burnside?

A: ambrose burnside
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Q: Cinder Cone, composite, and shield are all types of what?

A: cinder cone
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Q: What canal opened in Egypt?

A:
egypt
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