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

Ex Input:
What is the name of the main thoroughfare in Barcelona, which runs from the Placa de Catalunya to the sea?

Ex Output:
barcelona


Ex Input:
Which four letter word beginning with 'F' is a white crumbly Greek cheese, made from sheep's or goats milk and cured in brine?

Ex Output:
sheep


Ex Input:
What name is shared by the capital city of Newfoundland and the capital city of Antigua and Barbuda?

Ex Output:

newfoundland and labrador