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

Example Input: What is the largest city in Bavaria?
Example Output: bavaria

Example Input: What is the name of the US electric car manufacturer, founded in 2003, whose cars include the Model S and the Model X?
Example Output: tesla model s

Example Input: Austin is the state capitol of which US State?
Example Output:
austin, texas