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