In this task, you are given a question and a corresponding answer. Your task is to generate a fact statement that is useful in answering the given question.

Ex Input:
Question: What's a good way to heat up inside after ice skating on a frozen lake? Answer: set fire to some natural gas.

Ex Output:
natural gas is a source of heat by burning

Ex Input:
Question: Calculating a short distance can be accomplished with a? Answer: yard stick.

Ex Output:
a meter stick is used to measure length

Ex Input:
Question: A creature that completely goes unnoticed and unseen against a mottled leaf backdrop is probably? Answer: matching.

Ex Output:
camouflage is a kind of protection against predators