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