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

Example Input: Cinder Cone, composite, and shield are all types of what?
Example Output: cinder cone

Example Input: Which was the title of the 7th and final book in the Chronicles of Narnia by C.S. Lewis?
Example Output: the chronicles of narnia

Example Input: What is Canada's most populous province?
Example Output:
canada