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

Q: Who wrote `20,000 Leagues Under The Sea`?

A: 20,000 leagues under the sea
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Q: Whitney Houston`s husband Bobby Brown was originally a member of which successful band?

A: bobby brown
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Q: Herbert Pocket and Bentley Drummle are characters that appear in which book by Charles Dickens?

A:
bentley drummle
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