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: Calculating a short distance can be accomplished with a? Answer: yard stick.

A: a meter stick is used to measure length
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Q: Question: A  cast iron stove uses what as fuel? Answer: timber.

A: a stove generates heat for cooking usually
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Q: Question: every four seasons a cedar expands it's? Answer: outer covering.

A:
the number of rings in a tree trunk can be used to estimate the age of the tree
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