instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Bound for Glory is the 1943 autobiography of which singer-songwriter?
answer:
bound for glory


question:
The song Don't Rain On My Parade features in which musical?
answer:
don't rain on my parade


question:
`The Cage` was the 1964 pilot episode of which TV series?
answer:

the cage