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 is the largest city in Bavaria?

SOLUTION: bavaria

PROBLEM: Which strong man appears in the Bible in the Book of Judges?

SOLUTION: book of judges

PROBLEM: Who played Bodie and Doyle's boss, George Cowley, in the UK television series 'The Professionals'?

SOLUTION:
the professionals