Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: The correct order of food traveling through the digestive system after it is swallowed is: esophagus, stomach, small intestine, large intestine.

A: Which list gives the correct order of food traveling through the digestive system after it is swallowed?
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Q: Over 90% of the energy we use comes originally from the sun.

A: Over 90% of the energy we use comes originally from what?
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Q: In your body, the heart and lungs work together to make sure that oxygen gets to all the other organs of your body.

A:
In your body, what two organs work together to make sure that oxygen gets to all the other organs of your body?
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