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

SOLUTION: david bailey

PROBLEM: In which opera does a hunchback jester help his master, the Duke of Mantua, to seduce the daughter of a courtier?

SOLUTION: duke of mantua

PROBLEM: What is the capital of Switzerland?

SOLUTION:
switzerland