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