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

Ex Input:
Gabbro is a dark dense rock that can be found in the oceanic crust.

Ex Output:
Gabbro is a dark dense rock that can be found in what?

Ex Input:
Chewing insects such as dragonflies and grasshoppers have two many sets of jaws.

Ex Output:
Chewing insects such as dragonflies and grasshoppers have how many sets of jaws?

Ex Input:
Laid on dry land by reptiles, amniotic eggs have waterproof membranes that prevents them from drying out.

Ex Output:
Laid on dry land by reptiles, amniotic eggs have what that prevents them from drying out?