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

Ex Input:
In which city was Christopher Columbus born?

Ex Output:
columbus


Ex Input:
Who was re-elected Prime Minister of Canada in May 2011?

Ex Output:
prime minister of canada


Ex Input:
The Admiralty Islands in the Pacific Ocean belong to which country?

Ex Output:

admiralty islands