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

Example Input: Who wrote the 1939 book The Big Sleep?
Example Output: the big sleep

Example Input: Trujillo and Chiclayo are cities in which country in the Americas?
Example Output: chiclayo

Example Input: Which author wrote the 1886 novel 'The Strange Case of Dr Jekyll and Mr Hyde'?
Example Output:
strange case of dr jekyll and mr hyde