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 is the current Australian prime minister ?

SOLUTION: australia

PROBLEM: Which British Prime Minister signed the 'Entente Cordiale' in 1904?

SOLUTION: prime minister of the united kingdom

PROBLEM: Carpo and Elara are moons of which planet?

SOLUTION:
elara