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

[Q]: Who is the most famous cartoon creation of Chester Gould?
[A]: chester gould

[Q]: Who directed the film 'Back To The Future'?
[A]: back to the future

[Q]: Who wrote the poem ' The Ballad of Reading Gaol'?
[A]:
the ballad of reading gaol