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]: Created by Alex Raymond, this futuristic character first appeared in 1934. Who is he?
[A]: alex raymond


[Q]: In what 1949 classic English comedy from Ealing Studios does Alec Guinness play 8 roles?
[A]:
alec guinness