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

[EX Q]: Glycolysis is a series of reactions that is common to fermentation and cellular respiration.
[EX A]: What series of reactions is common to fermentation and cellular respiration?

[EX Q]: In machines that increase force, such as ramps and doorknobs and nutcrackers, output is greater is the relation between output and input force.
[EX A]: In machines that increase force, such as ramps and doorknobs and nutcrackers, what is the relation between output and input force?

[EX Q]: A mitotic spindle forms from the centrosomes.
[EX A]:
A mitotic spindle forms from the what?