instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
To determine the atomic weight of an element, you should add up protons and neutrons.
answer:
How do you determine the atomic weight of an element?

question:
In machines that increase force, such as ramps and doorknobs and nutcrackers, output is greater is the relation between output and input force.
answer:
In machines that increase force, such as ramps and doorknobs and nutcrackers, what is the relation between output and input force?

question:
All carbon atoms have six protons.
answer:
All carbon atoms have how many protons?