There are two blocks. Lets call them A and B. Block A contains two medium black squares. Medium black square number one is below medium black square number two and a medium yellow square. This block also has a medium blue square. It is below medium black square number two and the medium yellow square. Below medium black square number two there is the medium yellow square. Above block A we have block B. It contains a medium black square.
Which object is below a medium black square? the medium yellow square or the blue object?
the medium yellow square  the blue object both of them none of them