TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: In which bay is Alcatraz?

SOLUTION: alcatraz island

PROBLEM: The towns od Grimsby and Cleethorpes are in which English county?

SOLUTION: grimsby

PROBLEM: Who played the role of dance instructor, Mrs Wilkinson, in the 2000 film Billy Elliot?

SOLUTION:
billy elliot