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 engineer built the Menai Suspension Bridge and the Caledonian Canal?

SOLUTION: menai suspension bridge

PROBLEM: Who was re-elected Prime Minister of Canada in May 2011?

SOLUTION: prime minister of canada

PROBLEM: What was the title of Britney Spears' second album (and the single that was released from it)?

SOLUTION:
britney spears