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

Ex Input:
Carpo and Elara are moons of which planet?

Ex Output:
elara


Ex Input:
The song Don't Rain On My Parade features in which musical?

Ex Output:
don't rain on my parade


Ex Input:
What beat novel featured the character Dean Moriarty?

Ex Output:

dean moriarty