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

Q: Krist Novoselic and Dave Grohl were two thirds of which band, formed in Aberdeen (Washington State) whose albums include Bleach and In Utero?

A: dave grohl
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Q: What is the Army equivalent to a Group Captain in the R.A.F.?

A: british army
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Q: Created by Alex Raymond, this futuristic character first appeared in 1934. Who is he?

A:
alex raymond
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