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

Example Input: Who choreographed the ballets Swan Lake and Don Quixote, among others?
Example Output: don quixote

Example Input: What book was written by Alexandre Dumas about Edmond Dantes' imprisonment in the Chateau d'If?
Example Output: alexandre dumas

Example Input: In the 1960's, which jazz pianist wrote the pieces, It's a Raggy Waltz, Unsquare Dance and Blue Rondo a la Turk?
Example Output:
blue rondo a la turk