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

[Q]: The song Don't Rain On My Parade features in which musical?
[A]: don't rain on my parade


[Q]: Who wrote the novel 'Brideshead Revisited'?
[A]: brideshead revisited


[Q]: What is the name of the jockey who won the 2011 English Grand National on Ballabriggs?
[A]:
ballabriggs