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 is the capital of the US state of California?

SOLUTION: california

PROBLEM: Which country music star, writer of the song Your Cheatin' Heart, died on New Year's Day 1953?

SOLUTION: country music

PROBLEM: The Caspian Sea has borders with five countries. Which is missing from this list - Azerbaijan, Russia, Kazakhstan and Turkmenistan?

SOLUTION:
azerbaijan