There are three blocks. We call them A, B and C. Block A is above C and block C is below B. Block A has two medium black squares. Medium black square number one is below medium black square number two. Block B has one medium blue square. Block C has a medium yellow square. A medium black square is below the medium yellow square.
Which object is below a medium black square? the blue thing or the medium yellow square?
the blue thing the medium yellow square  both of them none of them