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