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