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.

[Q]: Question: What is the name for a series of changes in the reproductive system of mature females that repeats every month on average? Answer: menstrual cycle
[A]: Menstrual cycle is the name for a series of changes in the reproductive system of mature females that repeats every month on average.


[Q]: Question: Where are protons and neutrons located? Answer: central nucleus
[A]: Protons and neutrons are located in the central nucleus.


[Q]: Question: Hydrogen sulfide is a noxious and toxic gas produced from decaying organic matter that contains what? Answer: sulfur
[A]:
Hydrogen sulfide is a noxious and toxic gas produced from decaying organic matter that contains sulfur.