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

Ex Input:
Of which Canadian Province is Labrador a part?

Ex Output:
canada

Ex Input:
Better known as an actor, who directed the film 'A Bronx Tale'?

Ex Output:
a bronx tale

Ex Input:
Which British Prime Minister was the 1st Earl of Stockton?

Ex Output:
earl of stockton