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:
Which striped or checked cotton cloth takes its name from the Malay word for striped?

Ex Output:
cotton


Ex Input:
Which 1841 ballet was set to music by Adolphe Adam?

Ex Output:

adolphe adam