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

[EX Q]: Who directed the film 'Back To The Future'?
[EX A]: back to the future

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

[EX Q]: Who was the father of Alexander the Great?
[EX A]:
alexander the great