We have two blocks. Lets call them A and B. There are a medium black square and a small black square in block A. To the left of and below the small black square there is the medium black square. To the left of block A there is block B with a small yellow square and a medium black square in it. The medium black square is below a medium black circle. To the right of and above the medium black circle there is the small yellow square.
What is below the yellow thing? a medium black square or a small black square?
medium black square  small black square  both of them none of them