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: Plant cells have structures that animal cells? Answer: lack
Example Output: Plant cells have structures that animal cells lack.

Example Input: Question: What is the ratio of solutes in a solution to a volume of solvent in a solution known as? Answer: osmolality
Example Output: Osmolality is the ratio of solutes in a solution to a volume of solvent in a solution.

Example Input: Question: What do you call elements that contain only atoms of one type of element? Answer: native elements
Example Output:
You call elements that contain only atoms of one type of element native elements.