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's the name of Doctor Who's home planet ?

SOLUTION: doctor who

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: Name the actress, she died in August 2002, who played the part of 'Madame Edith Artois' in the TV series 'Allo, Allo'?

SOLUTION:
edith artois