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.

Q: Question: Riding a two wheeled human powered vehicle is good for the environment because? Answer: it runs without fuel.

A: riding a bike does not cause pollution
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Q: Question: Two felled trees, split in twain, with the same number of rings, means they're the same? Answer: age.

A: a tree growing a tree-growth ring occurs once per year
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Q: Question: What best explains a muddy road becoming dry later? Answer: evaporation.

A:
if a liquid disappears then that liquid probably evaporated
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