TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Which SF author wrote The Day it Rained Forever?

SOLUTION: the day it rained forever

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

SOLUTION: how to be good

PROBLEM: Who wrote and had a hit with the instrumental Classical Gas?

SOLUTION:
classical gas