There are three blocks. We call them A, B and C. There are three medium black squares in block A. Medium black square number one is touching the bottom edge of this block. Below medium black square number three is medium black square number two. Medium black square number one is below medium black square number three and medium black square number two. To the left of block A is block B. It has one medium yellow square. Below block A there is block C. It contains one medium black square.
Which object is to the left of a medium black square? the medium black square which is touching the bottom edge of a block or medium black square number three?
the medium black square  which is touching the bottom edge of a block  medium black square  number three both of them none of them