TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: 'The Dream of Gerontius' is the 1900 work of which English composer?

SOLUTION: the dream of gerontius

PROBLEM: Who was the CBS News anchor-man known as 'the man Americans most trust'?

SOLUTION: news presenter

PROBLEM: Which literary character is the best known creation of the writer Earl Derr Biggers?

SOLUTION:
earl derr biggers