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

Ex Input:
The energy stored in the organic molecules of food ultimately comes from the sun.

Ex Output:
The energy stored in the organic molecules of food ultimately comes from where?


Ex Input:
While the numerical aperture can be used to compare resolutions of various objectives, it does not indicate how far the lens could be from the specimen.

Ex Output:
While the numerical aperture can be used to compare resolutions of various objectives, it does not indicate how far the lens could be from the what?


Ex Input:
The seven unique crystal types are defined by faces parts of themselves (parts that intersect at various angles).

Ex Output:
The seven unique crystal types are defined by what parts of themselves (parts that intersect at various angles)?