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

Input: Consider Input: The opening in the front of the eye is called pupil.

Output: What is the opening in the front of the eye called?


Input: Consider Input: Covalent solutes separate into individual molecules when dissolved.

Output: Covalent solutes separate into what when dissolved?


Input: Consider Input: Human blood has a buffering system to minimize extreme changes in ph.


Output: Human blood has a buffering system to minimize extreme changes in what?