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 Bob Dylan song begins You got a lotta nerveTo say you are my friend. When I was down, You just stood there grinning?

SOLUTION: bob dylan

PROBLEM: The Trinity test site, outside of Alamogordo, NM, saw the first test of the atomic bomb on July 16, 1945. Headed by J. Robert Oppenheimer, what was the name of the project that developed the bomb?

SOLUTION: j. robert oppenheimer

PROBLEM: Which playwright wrote Ghosts and A Doll`s House?

SOLUTION:
ghosts