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

[Q]: Cloudy conditions will most likely result from a low-pressure weather system.
[A]: Which will most likely result from a low-pressure weather system?


[Q]: You see a faster reaction rate when the concentration of reactants is higher.
[A]: What kind of reaction do you see when the concentration of reactants is higher?


[Q]: Knees and elbows are examples of the joints of the skeletal system.
[A]:
Knees and elbows are examples of what part of the skeletal system?