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

Example Input: 'Bring It All Back' was the debut single for which group in 1999?
Example Output: bring it all back

Example Input: Feb 15, 1564 saw the birth of what famed Italian physicist, mathematician, astronomer, and philosopher, who discovered the first 4 moons of Jupiter?
Example Output: astronomer

Example Input: Which TV character has sisters called Daisy and Rose?
Example Output:
daisy