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

The novels 'The Shipmaster, 'The Iron Ships' and 'The Trade Winds' by Cyril Abraham, are based on which 1970's British tv series?
cyril abraham

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

Chester Bennington is a member of which band of the 2000s?

chester bennington

