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 Q]: 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 A]: natural gas is a source of heat by burning

[EX Q]: Question: A telescope is required for detailed observation of what? Answer: astral bodies.
[EX A]: detailed observation of celestial objects requires a telescope

[EX Q]: Question: If you eat food that lots of microorganisms have been on, you could get? Answer: get an ailment.
[EX A]:
microorganisms cause food to spoil