instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Healthy lungs is necessary in a person who wishes to play wind instruments.
answer:
What is necessary in a person who wishes to play wind instruments?


question:
In the lungs, oxygen diffuses out of the alveoli and into capillaries.
answer:
In the lungs, oxygen diffuses out of the alveoli and into where?


question:
Proper chemical formulas for ionic compounds balance the total positive charge with total negative charge.
answer:
Proper chemical formulas for ionic compounds balance the total positive charge with what?