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