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

Ex Input:
Which English king was the son of Edward, the Black Prince?

Ex Output:
edward, the black prince


Ex Input:
Which American city has baseball-playing 'Dodgers'?

Ex Output:
los angeles dodgers


Ex Input:
Which Sanskrit word appears as a concept in both Buddhism and Hinduism, etc., and means Law or Natural Law?

Ex Output:

hinduism