instruction:
You are given a sentence and your task is to generate another sentence that supports the given input.
question:
Any time two groups are so different that they can not reproduce to produce healthy fertile offspring, both concepts consider them to be separate species.
answer:
If two populations do not mate and produce fertile offspring, separate species result.


question:
Nearly 99 percent of the  earth's atmosphere is nitrogen and oxygen.
answer:
Oxygen and nitrogen make up most of the earth's atmosphere.


question:
Neptune Neptune is the eighth planet from the Sun and the fourth largest (by diameter).
answer:

The eighth planet from our sun is neptune.