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

Q: Which group had UK top ten hits in 1987 with 'Sweet Little Mystery' and 'Angel Eyes'?

A: angel eyes
****
Q: Which former Portuguese African Colony joined the British Commonwealth in 1995?

A: commonwealth of nations
****
Q: Barry Allen was the alter ego of which DC comic superhero?

A:
flash
****