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

Example Input: In which country did the dance The Czardas originate?
Example Output: csardas

Example Input: Which Beatle played Youngman Grand in The Magic Christian 1969, with Peter Sellers?
Example Output: the beatles

Example Input: What famous author wrote many plays but just one novel, The Picture of Dorian Gray?
Example Output:
the picture of dorian gray