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: Paper suitable for recycling is often used to produce? Answer: cellulose nanofibers.
[EX A]: paper is recyclable

[EX Q]: Question: Two felled trees, split in twain, with the same number of rings, means they're the same? Answer: age.
[EX A]: a tree growing a tree-growth ring occurs once per year

[EX Q]: Question: You can easily scratch a windshield with? Answer: beach sand.
[EX A]:
quartz scratches glass easily