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

[Q]: Which Beatle played Youngman Grand in The Magic Christian 1969, with Peter Sellers?
[A]: the beatles

[Q]: Which 'brothers' had a number one hit in May 1958 with 'All I Have To Do Is Dream'?
[A]: all i have to do is dream

[Q]: Complete the title of a book by Doctor Benjamin Spock: The Common Sense Book of ...?
[A]:
benjamin spock