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

Input: Consider Input: Which biologist was known as Darwin's Bulldog?

Output: charles darwin


Input: Consider Input: Eddie Jones was appointed head coach of which English sporting team in 2015?

Output: eddie jones


Input: Consider Input: Which American city has basketball-playing 'Celtics'?


Output: boston celtics