instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Fermat’s principle states that light will always take the path of the least amount of time.
answer:
Fermat’s principle states that light will always take the path of least amount of?


question:
The sound in a loud classroom is an example of a form of energy.
answer:
Which of the following is an example of a form of energy?


question:
Water is an oxide of hydrogen.
answer:
Water is an oxide of what element?