We have two blocks. Lets call them A and B. Block A is above B. Block A has a medium blue square and a medium black square. The medium blue square is below the medium black square. Block B contains one medium black square, a medium yellow square and one medium blue square. The medium black square is touching the bottom edge of this block. The medium yellow square is below the medium blue square. The medium black square is below the medium blue square. It is below the medium yellow square.
Which object is below a medium square? the medium blue square which is in block A or the medium blue square that is in block B?
the medium blue square  which is in block A the medium blue square  that is in block B both of them none of them