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 strong man appears in the Bible in the Book of Judges?

SOLUTION: book of judges

PROBLEM: According to folklore, what was the name of the monster slain by 'Beowulf'?

SOLUTION: beowulf

PROBLEM: Which King married Alexandra, daughter of Christian IX of Denmark?

SOLUTION:
alexandra of denmark