There are two blocks. We call them A and B. Block A is above B. Block A has one medium blue square and one medium black square. Below the medium black square is the medium blue square. It also contains one medium yellow square. The medium yellow square is below the medium blue square and the medium black square. Block B contains two medium black squares. Medium black square number one is touching the bottom edge of this block. This object is below medium black square number two.
Which object is above a medium black square? the yellow object that is touching the bottom edge of a block or the blue object?
the yellow object that is touching the bottom edge of a block  the blue object both of them none of them