We have three blocks. Lets call them A, B and C. There is one medium yellow square in block A. To the left of block A there is block B which has two medium black squares. Medium black square number one is touching the bottom edge of this block. This block also contains one medium yellow square. It is below medium black square number two. Below medium black square number two and the medium yellow square is medium black square number one. Above block A there is block C which contains a medium yellow square.
Which object is below a medium black square? the medium yellow square that is in block B or the medium yellow square that is in block A?
the medium yellow square  that is in block B the medium yellow square  that is in block A both of them none of them