There are three blocks. Lets call them A, B and C. A medium yellow square is in block A. Then, we have block B which contains two medium blue squares. Medium blue square number one is below medium blue square number two which is below a medium black square. This object is below the medium black square. Finally, we have block C which is below block B and to the right of block A. It has one medium yellow square.
Which object is below a medium 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