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: 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: What is essential for forming new genes? Answer: large mutations
Example Output: Large mutations is essential for forming new genes.

Example Input: Question: Active transport mechanisms require the use of the cell's energy, usually in the form of what? Answer: adenosine triphosphate (atp
Example Output:
Active transport mechanisms require the use of the cell's energy, usually in the form of adenosine triphosphate (atp.