We have two blocks. We call them A and B. Block A has two medium black squares. Medium black square number one is below a medium blue square. It also contains one medium yellow square. Below the medium blue square , medium black square number two and medium black square number one is the medium yellow square... The medium blue square is below medium black square number two. Above block A there is block B with a medium blue square and a medium yellow square in it. The medium blue square is touching the bottom edge of this block. It is below the medium yellow square.
Which object is below a medium yellow square? medium black square number one or medium black square number two?
medium black square  number one medium black square  number two both of them none of them