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

Ex Input:
Who had a 2000 hit with Country Grammar?

Ex Output:
country grammar


Ex Input:
Charon is a moon which orbits which body?

Ex Output:
charon


Ex Input:
Which jockey, later famous in another sphere, rode Devon Loch in the 1956 Grand National?

Ex Output:

1956 grand national