We have three blocks. Lets call them A, B and C. Block A contains two medium black squares. Medium black square number one is touching the bottom edge of this block. This object is below medium black square number two. Block B is above block A. It contains one medium black square. Above block A there is block C. It contains a medium black square and one medium yellow square. The medium black square is below the medium yellow square.
What is above the thing which is touching the bottom edge of a block? a medium black square number two or a medium black square that is in block B?
medium black square  number two medium black square  that is in block B both of them none of them