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: The esophagus runs a mainly straight route through the mediastinum of what? Answer: thorax
[A]: The esophagus runs a mainly straight route through the mediastinum of thorax.


[Q]: Question: Knees and elbows are examples of what part of the skeletal system? Answer: joints
[A]: Knees and elbows are examples of the joints of the skeletal system.


[Q]: Question: What is the opening in the front of the eye? Answer: the pupil
[A]:
The pupil is the opening in the front of the eye.