There are two blocks, A and B. There are one medium yellow square and one medium blue square in block A. Below a medium black square and the medium blue square there is the medium yellow square. The medium black square is below the medium blue square. Block B is above block A. It contains two medium yellow squares. Medium yellow square number one is below medium yellow square number two.
Which object is below a medium yellow square? the blue thing or the medium black square?
the blue thing the medium black square  both of them none of them