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

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

Example Input: Forty hours before he committed suicide in 1945 Adolf Hitler married whom?
Example Output: adolf hitler

Example Input: With which song did Clodagh Rogers represent the UK in the 1971 Eurovision Song Contest?
Example Output:
clodagh rodgers