instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Cranium (skull) is the term for the skeletal structure of the head that supports the face and protects the brain.
answer:
What is the term for the skeletal structure of the head that supports the face and protects the brain?


question:
Potential energy type of energy is possessed by autumn leaves before they fall.
answer:
What type of energy is possessed by autumn leaves before they fall?


question:
Of the nine classes of vertebrates, five many are fish.
answer:

Of the nine classes of vertebrates, how many are fish?