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 it called when two waves combine to create a larger wave? Answer: constructive interference
Example Output: Constructive interference is when two waves combine to create a larger wave.

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: Which adaptation often helps an animal attract a mate? Answer: coloration
Example Output:
Coloration often helps an animal attract a mate.