There are three blocks. We call them A, B and C. Block B is to the right of and C is below A. Block A has a medium blue square. Below the medium blue square there is a medium yellow square. Block B has a medium blue square and one medium yellow square. The medium blue square is below the medium yellow square. And block C contains four medium black squares. Medium black square number one is touching the bottom edge of this block. Below medium black square number four and medium black square number three there is medium black square number two. Below medium black square number four there is medium black square number three. Below medium black square number two and medium black square number three there is medium black square number one.
Which object is below a medium black square? the medium black square that is touching the bottom edge of a block or medium black square number four?
the medium black square  that is touching the bottom edge of a block  medium black square  number four both of them none of them