We have three blocks. We call them A, B and C. Block C is above B and block A is below C. Block A has a medium blue square. Block B contains a medium blue square. Below a medium yellow square there is the medium blue square. Block C has two medium black squares. Below medium black square number two is medium black square number one.
What is above the yellow object? a medium black square number one or a medium black square number two?
medium black square  number one medium black square  number two both of them none of them