TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Who hosted Call My Bluff?

SOLUTION: call my bluff

PROBLEM: Which model was married to photographer David Bailey for 10 years, from 1975?

SOLUTION: david bailey

PROBLEM: In the 2013 Oscar awards which singer won Best Original Song?

SOLUTION:
academy award for best original song