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

Ex Input:
Who follows 'the eight fold path'?

Ex Output:
noble eightfold path


Ex Input:
Which is the largest continent on Earth?

Ex Output:
earth


Ex Input:
Velma Kelly and Billy Flynn are two of the leading characters in which 2002 musical?

Ex Output:

william flynn