TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Name Shakespeare play Ariel, Miranda and Prospero appear?

SOLUTION: ariel

PROBLEM: Who wrote the novels About A Boy, How To Be Good and High Fidelity?

SOLUTION: how to be good

PROBLEM: Who wrote the novel The 39 Steps?

SOLUTION:
the 39 steps