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

Ex Input:
Who wrote the novels About A Boy, How To Be Good and High Fidelity?

Ex Output:
how to be good


Ex Input:
Who in the 1930's wrote the novel 'Cakes And Ale'?

Ex Output:
cakes and ale


Ex Input:
Brian Johnson is the singer with which 'hard-rock' band founded in 1973 by brothers Malcolm and Angus Young?

Ex Output:

angus young