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

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

Output: watson

Input: Consider Input: The Cato Street Conspiracy was a plot to kill which British Prime Minister?

Output: prime minister of the united kingdom

Input: Consider Input: Billy the Kid was a native of which US state?
Output: billy