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: What describes the amount of solute in a solution? Answer: tonicity

Ex Output:
Tonicity describes the amount of solute in a solution.

Ex Input:
Question: The cubic crystal system is composed of how many different types of unit cells? Answer: three

Ex Output:
The cubic crystal system is composed of three many different types of unit cells.

Ex Input:
Question: Carbon dioxide is an example of a material that easily undergoes what? Answer: sublimation

Ex Output:
Carbon dioxide is an example of a material that easily undergoes sublimation.