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

Ex Input:
The cardiovascular system in the human body consists of the heart, a network of blood vessels, and blood.

Ex Output:
Which system in the human body consists of the heart, a network of blood vessels, and blood?


Ex Input:
You call a substance that is not an acid or a base neutral.

Ex Output:
What do you call a substance that is not an acid or a base?


Ex Input:
Keratin is the most familiar fibrous protein found in your body.

Ex Output:
What is the most familiar fibrous protein found in your body?