TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: In the lungs, oxygen diffuses out of the alveoli and into capillaries.

SOLUTION: In the lungs, oxygen diffuses out of the alveoli and into where?

PROBLEM: Electric motors transform electrical energy into kinetic energy.

SOLUTION: Electric motors transform electrical energy into what other form of energy?

PROBLEM: Gases helps sound travel in waves.

SOLUTION:
What helps sound travel in waves?