We have three blocks. We call them A, B and C. A medium black square is in block A. Above block A we have block B which contains a medium black square and a medium yellow square.. The medium black square is below the medium yellow square. To the right of block B there is block C which has a medium blue square. This block also has a medium yellow square. Below the medium blue square is the medium yellow square.
Which object is below a medium square? the medium yellow square that is in block B or the medium yellow square that is touching the bottom edge of a block?
the medium yellow square  that is in block B the medium yellow square  that is touching the bottom edge of a block  both of them none of them