There are two blocks. Lets call them A and B. A medium blue square, a medium yellow square and a medium black square are in block A. The medium blue square is below the medium yellow square. Below the medium black square there is the medium yellow square. Below the medium black square there is the medium blue square. Block B is below block A. It has one medium black square and one medium blue square. The medium black square is below the medium blue square.
Which object is below a medium blue square? the medium black square that is in block A or the medium black square that is in block B?
the medium black square  that is in block A the medium black square  that is in block B both of them none of them