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

Ex Input:
And Then There Were None?

Ex Output:
and then there were none

Ex Input:
Which mediaeval author wrote The Canterbury Tales?

Ex Output:
the canterbury tales

Ex Input:
Which Guns n Roses song from the album Appetite For Destruction begins: Your daddy works in porno now that mommy's not around. She used to love her heroin but now she's underground?

Ex Output:
guns n' roses