instruction:
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.
question:
Question: Which kind of muscle regulates air flow in lungs? Answer: smooth
answer:
Smooth muscle regulates air flow in lungs.


question:
Question: Hot magma beneath the surface mixes with water and forms what? Answer: gas
answer:
Hot magma beneath the surface mixes with water and forms gas.


question:
Question: Which form of matter assumes the shape of its container? Answer: gas
answer:

A gas assumes the shape of its container.