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

Example Input: With eight goals which Barcelona player was the leading scorer in the 2009-10 Champions League?
Example Output: barcelona

Example Input: What was Paul McCartney's first solo album called?
Example Output: album

Example Input: Bye Bye Love in 1957 was the first hit single for which duo?
Example Output:
bye bye love