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: Convection is caused by uneven what? Answer: warmness distribution.
[EX A]: uneven heating causes convection

[EX Q]: Question: A wire can be caused to heat up when what kind of current flows through it? Answer: zapping power.
[EX A]: electrical current running through a wire causes that wire to heat up

[EX Q]: Question: Good stewards of the environment would? Answer: purchase transportation that uses alternate fuel sources.
[EX A]:
electricity causes less pollution than gasoline