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

Ex Input:
Lopburi, Phichit and Ang Thong are provinces in which Asian country?

Ex Output:
phichit

Ex Input:
Which Irish boxer was nicknamed the Clones Cyclone?

Ex Output:
boxing

Ex Input:
Which biologist was known as Darwin's Bulldog?

Ex Output:
charles darwin