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

Q: Who had a hit album with Back to Bedlam in 2005?

A: back to bedlam
****
Q: Double vision, the perception of two images from a single object, is properly called what?

A: double vision
****
Q: The Museum of Bags and Purses is in which European city?

A:
museum of bags and purses
****