TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: What are Proxima Centauri, Sirius A, Pollux, Arcturus and Betelgeuse?

SOLUTION: arcturus

PROBLEM: Which British singer released a 1972 album entitled 'Blondes Have More Fun'?

SOLUTION: blondes have more fun

PROBLEM: In which constellation would you find the star cluster known as the Plough or Big Dipper?

SOLUTION:
big dipper