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.

[EX Q]: Question: What does the esophagus produce for lubrication? Answer: mucous
[EX A]: Mucous does the esophagus produce for lubrication.

[EX Q]: Question: Living organisms are comprised of organic compounds, which are molecules built around what element? Answer: carbon
[EX A]: Living organisms are comprised of organic compounds, which are molecules built around carbon.

[EX Q]: Question: What system transports many substances to and from cells throughout the body? Answer: cardiovascular
[EX A]:
The cardiovascular system transports many substances to and from cells throughout the body.