In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Q: Question: What is the name of film that polyester fibers form? Answer: mylar

A: The name of film that polyester fibers form is mylar.
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Q: Question: Adulthood is divided into how many stages? Answer: three

A: Adulthood is divided into three stages.
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Q: Question: What in the air allows us to hear sound? Answer: gases

A:
Gases in the air allows us to hear sound.
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