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

Q: Which biologist was known as Darwin's Bulldog?

A: charles darwin
****
Q: The Briish Airways subsidiary BA Connect was sold to which other airline?

A: airline
****
Q: 'Alcea rosea' is the Latin name for which common garden flower?

A:
alcea rosea
****