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

Ex Input:
Where on Prince Edward Island, Canada, is Anne of Green Gables located?

Ex Output:
canada


Ex Input:
Who is the BBC's political editor?

Ex Output:
bbc


Ex Input:
Which British Prime Minister was born at 54 Albion Road, Broadstairs, Kent on July 9th 1916 ?

Ex Output:

broadstairs