There are two blocks. We call them A and B. There are three medium black squares in block A. Medium black square number one is below medium black square number two and medium black square number three. Medium black square number two is below medium black square number three. Block B is below block A. It contains a medium blue square and one medium yellow square. The medium blue square is below the medium yellow square.
What is above the yellow thing? a blue shape or a medium black square?
blue shape medium black square  both of them none of them