instruction:
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.
question:
Question: The mass of atoms is based on the number of protons and neutrons in what? Answer: nucleus
answer:
The mass of atoms is based on the number of protons and neutrons in nucleus.


question:
Question: What are living echinoderms divided into five of? Answer: clades
answer:
Living echinoderms aredivided into five clades.


question:
Question: Which of these transmits sound the fastest? Answer: A metal rod
answer:

A metal rod of these transmits sound the fastest.