TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: The 2002 Winter Olympics were held in which city?

SOLUTION: 2002 winter olympics

PROBLEM: In which British city would you find Barlinnie prison?

SOLUTION: hm prison barlinnie

PROBLEM: What did Peter Carl Faberge famously make?

SOLUTION:
peter carl faberge