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 disease is unpreventable in the type one form but may be prevented by diet if it is of the second type? Answer: diabetes
Example Output: Diabetes is unpreventable in the type one form but may be prevented by diet if it is of the second type.

Example Input: Question: What occurs when a population reaches the carrying capacity? Answer: growth stops
Example Output: Growth stops when a population reaches the carrying capacity.

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.