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

Q: Who has written a series of novels, entitled The Dark Tower, of which the first, in 1982, was entitled, The Gunslinger?

A: the dark tower
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Q: Which pop group consisted of Huw Bunford, Clan Caren, Dafydd Leuan, Guto Price and Gryff Rhuys?

A: huw bunford
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Q: Which SAS soldier wrote the book 'Bravo Two Zero', an account of a failed mission during the (1st) Gulf War?

A:
bravo two zero
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