TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Which Renaissance artist's life was fictionalised in the book 'The Agony and the Ecstasy' subsequently made into a film?

SOLUTION: the agony and the ecstasy

PROBLEM: Cassandra, Grizabella and Skimbleshanks are all characters in which Andrew Lloyd Webber musical?

SOLUTION: andrew lloyd webber

PROBLEM: ABBA and Celine Dion were winners of what European song contest?

SOLUTION:
celine dion