There are three blocks, A, B and C. There is one medium blue square in block A. Then, there is block B with a medium blue square in it. A medium yellow square is below the medium blue square. Finally, to the left of block B we have block C. It is above block A. It has one medium black square and a medium yellow square. Below the medium yellow square there is the medium black square.
What is below the black thing? a medium blue square that is in block B or a medium blue square that is in block A?
medium blue square  that is in block B medium blue square  that is in block A both of them none of them