TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Forty hours before he committed suicide in 1945 Adolf Hitler married whom?

SOLUTION: adolf hitler

PROBLEM: What is the smallest country in Central America Costa Rica, Venezuela or El Salvador?

SOLUTION: central america

PROBLEM: What is the carrier code for American Airlines?

SOLUTION:
american airlines