instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Injuries can be prevented by getting proper rest and recovery.
answer:
Injuries can be prevented by getting proper what?

question:
Matter that mechanical wave energy can only travel through is medium.
answer:
What is the name of matter that mechanical wave energy can only travel through?

question:
Plasma comprises the sun and other stars, as well as lightning and the northern lights.
answer:
What material comprises the sun and other stars, as well as lightning and the northern lights?