TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Who was in the films Zelig, Stardust Memories, and Broadway Danny Rose?

SOLUTION: broadway danny rose

PROBLEM: What was the name of country music's first superstar who died at the age of 29 from drink and drug abuse?

SOLUTION: country music

PROBLEM: Which two brothers had hits with Cathy's Clown and Wake Up Little Susie?

SOLUTION:
cathy's clown