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

Example Input: Who directed the 2005 film 'Brokeback Mountain'?
Example Output: brokeback mountain

Example Input: Ewart was the middle name of which British Prime Minister?
Example Output: prime minister of the united kingdom

Example Input: Who provided the voice for Bob The Builder on his number one hit Can We Fix It?
Example Output:
bob