TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Lexus is the luxury vehicle division of what car maker?

SOLUTION: lexus

PROBLEM: Allopurinol is typically prescribed for which illness?

SOLUTION: allopurinol

PROBLEM: Great short-stories like The Gift of the Magi, The Ransom of Red Chief, and The Cop and the Anthem are from what collection of O. Henry that was a reaction to a statement that only four hundred people mattered in New York?

SOLUTION:
the gift of the magi