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 the term for heterotrophs that eat only or mainly animals? Answer: carnivores
Example Output: Carnivores is the term for heterotrophs that eat only or mainly animals.

Example Input: Question: When food enters the stomach after a period of fasting, a drop in what initiates the conversion of pepsinogen to pepsin? Answer: ph
Example Output: Ph food enters the stomach after a period of fasting, a drop in what initiates the conversion of pepsinogen to pepsin.

Example Input: Question: What are the sporophytes in ferns? Answer: leafy plants
Example Output:
Leafy plants are the sporophytes in ferns.