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 Input:
Question: When gas particles collide, what kinds of collisions are these considered? Answer: elastic

Ex Output:
When gas particles collide, these collisions are considered elastic.


Ex Input:
Question: Which human body system controls the amount of water in the body and removes wastes? Answer: urinary system

Ex Output:
The urinary system system controls the amount of water in the body and removes wastes.


Ex Input:
Question: What phenomenon is essential in order for evolution to occur because it increases genetic variation and the potential for individuals to differ? Answer: mutation

Ex Output:

Mutation is essential in order for evolution to occur because it increases genetic variation and the potential for individuals to differ.