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

Ex Input:
Chemical digestion mainly occurs in the small intestine.

Ex Output:
Where does chemical digestion mainly occur?


Ex Input:
Hybridization model model helps explain molecules with double or triple bonds.

Ex Output:
Which model helps explain molecules with double or triple bonds?


Ex Input:
The speed of a wave through connected harmonic oscillators depends on the distance between them, the spring constant, and the mass.

Ex Output:

The speed of a wave through connected harmonic oscillators depends on the distance between them, the spring constant, and the what?