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

Example Input: Basil Rathbone made 14 Sherlock Holmes films. Who played the part of Dr Watson?
Example Output: watson

Example Input: Which former Portuguese African Colony joined the British Commonwealth in 1995?
Example Output: commonwealth of nations

Example Input: Which British actor/comedian is the voice of Dr Nefario in the 2010 animated film 'Despicable Me'?
Example Output:
despicable me