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: Looking directly at what celestial object can cause blindness? Answer: sun
[EX A]: Looking directly at the sun can cause blindness.

[EX Q]: Question: The average global temperature has been rising since the end of what era? Answer: pleistocene
[EX A]: The average global temperature has been rising since the end of pleistocene era.

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