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

Ex Input:
Phospholipids are the main component of the cell membrane.

Ex Output:
What is the main makeup of the cell membrane?


Ex Input:
According to the english system measurement, 4 cups much is equal to 2 pints, 1 quart, and ¼ of a gallon.

Ex Output:
According to the english system measurement, how much is equal to 2 pints, 1 quart, and ¼ of a gallon?


Ex Input:
Cranium (skull) is the term for the skeletal structure of the head that supports the face and protects the brain.

Ex Output:
What is the term for the skeletal structure of the head that supports the face and protects the brain?