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 medium black square which is in block C or medium black square number two?
the medium black square  which is in block C medium black square  number two both of them none of them