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 the smallest unit of time commonly based on? Answer: second
Example Output: Second is the smallest unit of time commonly based on.

Example Input: Question: The fact that water in a reservoir is elevated above the ground means that it has what kind of energy? Answer: potential
Example Output: The fact that water in a reservoir is elevated above the ground means that it has potential kind of energy.

Example Input: Question: The study of energy and energy transfer involving physical matter is what? Answer: thermodynamics
Example Output:
The study of energy and energy transfer involving physical matter is called thermodynamics.