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 are compounds with the same number of carbon and hydrogen atoms called? Answer: isomers
Example Output: Isomers are compounds with the same number of carbon and hydrogen atoms called.

Example Input: Question: The concentration of hydrogen ions in a solution is called? Answer: acidity
Example Output: The concentration of hydrogen ions in a solution is called acidity.

Example Input: Question: All cells need what for energy? Answer: glucose
Example Output:
All cells need glucose for energy.