TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Standard measurements in science are very important so that we can compare experimental data from one lab to another and make sure we all are talking about the same thing.

SOLUTION: What in science are very important so that we can compare experimental data from one lab to another and make sure we all are talking about the same thing?

PROBLEM: Most of the gray matter is on the surface of the brain, surrounding white matter.

SOLUTION: Most of the gray matter is on the surface of the brain, surrounding what other type of matter?

PROBLEM: At least 20 percent of the world’s people do not have a ready supply of clean drinking water.

SOLUTION:
At least 20 percent of the world’s people do not have a ready supply of what?