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