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: Carbon dioxide molecules consist of a central carbon atom bonded to how many oxygen atoms? Answer: two
[A]: Carbon dioxide molecules consist of a central carbon atom bonded to two oxygen atoms.


[Q]: Question: Which kind of muscle regulates air flow in lungs? Answer: smooth
[A]: Smooth muscle regulates air flow in lungs.


[Q]: Question: Cody's velocity is zero so therefore he doesn't have what? Answer: momentum
[A]:
Cody's velocity is zero so therefore he doesn't have momentum.