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

Example Input: Carpo and Elara are moons of which planet?
Example Output: elara

Example Input: Who succeeded Jon Pertwee as Doctor Who?
Example Output: doctor who

Example Input: Which Afro American super model, TV personality and singer hosts the TV show, America's Next Top Model and also has her own daytime TV chat show?
Example Output:
america's next top model