TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Kronos (or Cronus) was the Greek equivalent of which Roman god?

SOLUTION: cronus

PROBLEM: Charlie Chaplin who died on Christmas Day in 1977, co founded which film studio along with Mary Pickford, Douglas Fairbanks?

SOLUTION: douglas fairbanks

PROBLEM: What quantity is measured in Amperes?

SOLUTION:
ampere