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

Example Input: According to folklore, what was the name of the monster slain by 'Beowulf'?
Example Output: beowulf

Example Input: Which legal drama starring Martin Shaw ran for six series on BBC TV from 2001?
Example Output: martin shaw

Example Input: Who was US President during the Cuban Missile Crisis?
Example Output:
cuban missile crisis