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