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

Ex Input:
Where is the Barbary Coast?

Ex Output:
barbary coast


Ex Input:
Manchild and Buffalo Stance were hits for which singer?

Ex Output:
manchild


Ex Input:
In the 1876 novel 'The Adventures of Tom Sawyer' by Mark Twain, what is the name of Tom's half brother who lives with Tom and his aunt Polly?

Ex Output:

the adventures of tom sawyer