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 term for liquid waste formed by kidneys? Answer: urine
Example Output: Urine is the term for liquid waste formed by kidneys.

Example Input: Question: One of the main features all vetebrates have in common is what? Answer: backbone
Example Output: One of the main features all vetebrates have in common is a backbone.

Example Input: Question: In humans, the sperm cell is the only cell with what structure that enables motility? Answer: flagella
Example Output:
In humans, the sperm cell is the only cell with the flagella structure that enables motility.