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

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


[Q]: Released last month, People, Hell and Angels is a posthumous album made up of songs recorded by which artist in 1969 ?
[A]: angel


[Q]: Who played the title role in the 1977 film 'Annie Hall'?
[A]:
annie hall