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: Which of the following relies on vibrating matter to work? Answer: violas.
[EX A]: vibrating matter can produce sound

[EX Q]: Question: What has a positive impact on a bodies strength? Answer: pumping iron.
[EX A]: exercise has a positive impact on a body 's strength

[EX Q]: Question: A thing which is measured, such as a bucket of salt, needs to first be? Answer: gathered.
[EX A]:
An example of collecting data is measuring