There are two blocks. We call them A and B. One medium blue square is in block A. Below a medium black square there is the medium blue square. To the left of block A we have block B. It has a medium yellow square and a medium blue square. A medium black square is below the medium yellow square. Below the medium blue square there is the medium yellow square. Below the medium blue square is the medium black square.
Which object is below a medium black square? the medium blue square that is in block A or the medium blue square that is in block B?
the medium blue square  that is in block A the medium blue square  that is in block B both of them none of them