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 British composer wrote the music used as the theme for Desert Island Discs  He also wrote the Dambusters march and the Knightsbridge march.?

SOLUTION: the dam busters

PROBLEM: Which chemical element is named after the Latin for Copenhagen where it was discovered?

SOLUTION: copenhagen

PROBLEM: Which team defeated the Indianapolis Colts to win the 2010 Super Bowl?

SOLUTION:
super bowl xliv