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