We have three blocks. Lets call them A, B and C. There is a medium blue square in block A. Below the medium blue square there is a medium yellow square. To the right of block A we have block B. It has one medium black square and a medium yellow square. The medium black square is touching the bottom edge of this block. It is below the medium yellow square. Finally, we have block C to the right of block A. It contains one medium black square. A medium yellow square is touching the bottom edge of this block. It is below the medium black square.
Which object is to the left of a medium black square? the medium yellow square which is in block B or the medium yellow square which is touching the bottom edge of a block?
the medium yellow square  which is in block B the medium yellow square  which is touching the bottom edge of a block  both of them none of them