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 a class of tetrapod vertebrates that produce amniotic eggs called? Answer: reptiles
Example Output: Reptiles are a class of tetrapod vertebrates that produce amniotic eggs called.

Example Input: Question: Most of the energy used by living things comes either directly or indirectly from what? Answer: the sun
Example Output: Most of the energy used by living things comes either directly or indirectly from the sun.

Example Input: Question: Covalent solutes separate into what when dissolved? Answer: individual molecules
Example Output:
Covalent solutes separate into individual molecules when dissolved.