Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
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Question: Whitney Houston`s husband Bobby Brown was originally a member of which successful band?

Answer: bobby brown


Question: Who directed the 2005 film 'Brokeback Mountain'?

Answer: brokeback mountain


Question: Which category of instrument includes the flute, oboe, clarinet and bassoon?

Answer:
bassoon