Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: An object attached to a spring sliding on a frictionless surface is an uncomplicated type of simple harmonic oscillator.

Answer: An object attached to a spring sliding on a frictionless surface is an uncomplicated type of what device?


Question: Diabetes is unpreventable in the type one form but may be prevented by diet if it is of the second type.

Answer: What disease is unpreventable in the type one form but may be prevented by diet if it is of the second type?


Question: Tropic and sex two types of hormones regulate mammalian reproduction.

Answer:
What two types of hormones regulate mammalian reproduction?