instruction:
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.
question:
Question: What is an example of protecting the environment? Answer: using water flow limiter.
answer:
An example of protecting the environment is reducing the amount of waste


question:
Question: A balance is used to measure the what of  a substance? Answer: heaviness.
answer:
a balance is used for measuring weight of a substance


question:
Question: Insomniacs are less healthy than other people because they? Answer: rarely slumber.
answer:

a human requires rest to be healthy