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