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

[EX Q]: Like skeletal muscle, cardiac muscle is striated.
[EX A]: Like skeletal muscle, cardiac muscle is what?

[EX Q]: Rubber is an example of a(n) insulators that does not allow electrons to move through them.
[EX A]: Rubber is an example of what type of substances that do not allow electrons to move through them?

[EX Q]: Gabbro is a dark dense rock that can be found in the oceanic crust.
[EX A]:
Gabbro is a dark dense rock that can be found in what?