TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: The novels 'The Shipmaster, 'The Iron Ships' and 'The Trade Winds' by Cyril Abraham, are based on which 1970's British tv series?

SOLUTION: cyril abraham

PROBLEM: What is the capital of the US state of California?

SOLUTION: california

PROBLEM: Dido and Aeneas is a work by which composer?

SOLUTION:
dido and aeneas