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