TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Who had a 2000 hit with Country Grammar?

SOLUTION: country grammar

PROBLEM: Seymour is the family name of which English duke?

SOLUTION: duke

PROBLEM: Which future king of England was born in Caernarfon Castle in 1284?

SOLUTION:
caernarfon castle