TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Everything Changes, Beautiful World and Circus are all albums released by which British band?

SOLUTION: beautiful world

PROBLEM: After Harold McMillan who was Britain's next Prime Minister?

SOLUTION: britain

PROBLEM: Used in the beauty industry, what is the most abundant protein in mammals, mainly found in flesh and connective tissues of vertebrates?

SOLUTION:
connective tissues