TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: In which Indian city is Eden Gardens, the second largest test cricket ground in the world?

SOLUTION: eden gardens

PROBLEM: Where is Charles Darwin buried?

SOLUTION: charles darwin

PROBLEM: Which Dallas actor also appeared in the MGM musicals Show Boat and Kiss Me Kate?

SOLUTION:
dallas