We have two blocks. We call them A and B. One medium black square, one medium yellow square and a medium blue square are in block A. The medium black square is touching the bottom edge of this block. Below the medium blue square there is the medium yellow square. The medium black square is below the medium yellow square and the medium blue square. Above block A we have block B. It has a medium yellow square and a medium black square. The medium yellow square is touching the bottom edge of this block. It is below the medium black square.
Which object is below a medium black square? the medium blue square or the medium black square that is touching the bottom edge of a block?
the medium blue square  the medium black square  that is touching the bottom edge of a block  both of them none of them