There are two blocks. We call them A and B. There is one medium black square in block A. To the left of block A there is block B. It contains two medium blue squares. Medium blue square number one is below medium blue square number two and a medium yellow square. It also contains a medium black square. The medium black square is below the medium yellow square , medium blue square number two and medium blue square number one.
Which object is to the left of a medium black square? the medium yellow square or the thing that is touching the bottom edge of a block?
the medium yellow square  the thing that is touching the bottom edge of a block  both of them none of them