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

Example Input: Which popular animated characters, first seen in 1996 include many different characters including ones called Ash Ketchum, Tracy Sketchit and Gar Oak?
Example Output: tracy

Example Input: Charon is a moon which orbits which body?
Example Output: charon

Example Input: Who had a 1993 album called 'Diva'?
Example Output:
diva