TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Double vision, the perception of two images from a single object, is properly called what?

SOLUTION: double vision

PROBLEM: Which country on the West African coast lies between The Democratic Republic of the Congo and Namibia?

SOLUTION: democratic republic of the congo

PROBLEM: Which composers 7th Symphony is known as the Leningrad symphony?

SOLUTION:
symphony no. 7