TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Which American actor and singer has joined Amanda Holden as one of the judges on the current series of 'Britain's Got Talent'?

SOLUTION: britain's got talent

PROBLEM: What was the name of the Prime Minister of Egypt who was assassinated in 1910?

SOLUTION: egypt

PROBLEM: What is the title of a novel by A J Cronin, a ballet by Kenneth Macmillan and has the Latin name cercis canadensis?

SOLUTION:
a. j. cronin