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: Glasses help you? Answer: remedy eyesight issues.
[EX A]: seeing is used for sensing visual things

[EX Q]: Question: Sound can be used for communication by? Answer: creatures.
[EX A]: sound can be used for communication by animals

[EX Q]: Question: Sarah has one piece of wood that is smooth and polished and another that is rough and unfinished. Which of the following is true? Answer: the unfinished wood will generate more heat than the other while rubbed over the floor.
[EX A]:
as the roughness of something increases , the friction of that something will increase when its surface moves against another surface