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

Ex Input:
At a convergent plate boundary, when one plate is oceanic, there are large volcanoes.

Ex Output:
At a convergent plate boundary, when one plate is oceanic, there are large what?


Ex Input:
After fertilization, a zygote forms into two cells.

Ex Output:
After fertilization, how many cells does a zygote form into?


Ex Input:
Enzymes in saliva help break down and digest starches and fats.

Ex Output:
Enzymes in saliva help bread down and digest what?