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

Ex Input:
An object attached to a spring sliding on a frictionless surface is an uncomplicated type of simple harmonic oscillator.

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

Ex Input:
Circannual behavioral rhythms are linked to the yearly cycle of seasons.

Ex Output:
What type of behavioral rhythms are linked to the yearly cycle of seasons?

Ex Input:
Pneumonia and emphysema illnesses are caused by damage to the alveoli of the lungs.

Ex Output:
What illnesses are caused by damage to the alveoli of the lungs?