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

[Q]: 'Highway 61 Revisited' and 'Blood On The Tracks' were both albums released by which popular singer?
[A]: highway 61 revisited

[Q]: What breed of dog is Marmaduke in the newspaper cartoon strip of that name?
[A]: dog

[Q]: Which novel by Thomas Hardytakes its title from a line in Shakespeare's 'As You Like It'?
[A]:
as you like it