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 town shares its name with the state capital of Delaware?

Ex Output:
delaware


Ex Input:
What was the last silent film in which Chaplin's little tramp appeared?

Ex Output:
chaplin


Ex Input:
Which shipping weather area includes the Channel Islands?

Ex Output:

channel islands