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.

Example Input: Question: What is at the top of the mesosphere? Answer: mesopause
Example Output: The mesopause is at the top of the mesosphere.

Example Input: Question: The mass of atoms is based on the number of protons and neutrons in what? Answer: nucleus
Example Output: The mass of atoms is based on the number of protons and neutrons in nucleus.

Example Input: Question: Which example best shows structures that make up the digestive system in the human body? Answer: esophagus, stomach, intestines
Example Output:
Esophagus, stomach, intestines are the structures that make up the digestive system in the human body.