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

[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?

[EX Q]: Sodium chloride is an odorless white solid that is harmless unless consumed in large quantities.
[EX A]: What is an odorless white solid that is harmless unless consumed in large quantities?

[EX Q]: Gravity attracts the earth to the sun.
[EX A]:
What attracts the earth to the sun?