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: 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


[Q]: Question: If a rub two rocks together after awhile they will start to? Answer: Get smooth.
[A]: contact between rocks over long periods of time causes rocks to smooth


[Q]: Question: can a kid with a new binoculars see a friend standing in a distance better or worse? Answer: visibility will be improved.
[A]:
binoculars are used for observing distant objects