There are three blocks. Lets call them A, B and C. There is a medium yellow square in block A. Block B is below block A. It contains a medium black square. Below the medium black square there is a medium yellow square. Below block B there is block C. It has a medium blue square and a medium yellow square. The medium blue square is below the medium yellow square.
What is above the blue object? a medium yellow square that is in block A or a medium yellow square that is in block C?
medium yellow square  that is in block A medium yellow square  that is in block C both of them none of them