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 Dickens novel is subtitled The Parish Boy's Progress?

SOLUTION: charles dickens

PROBLEM: In which city were the 2002 Winter Olympic Games held?

SOLUTION: 2002 winter olympics

PROBLEM: In June 1914, Archduke Franz Ferdinand, heir to the Austria-Hungary throne, was assassinated in which Bosnian province?

SOLUTION:
archduke franz ferdinand of austria