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

[Q]: Muscle groups are controlled by the motor cortex .
[A]: Muscle groups are controlled by what mechanism?


[Q]: Some materials have negative heats of solution; the dissolution of one of these solutes in water is called?
[A]: Some materials have negative heats of solution; the dissolution of one of these solutes in water is called?


[Q]: Rh is the common abbreviation for noting the rhesus blood type.
[A]:
What is the common abbreviation for noting the rhesus blood type?