There are two blocks. We call them A and B. Block A is below B. Block A contains a small black circle and a big blue circle. Above and to the left of the small black circle which is to the right of the big blue circle there is a small blue square. Block B contains a small black square. A medium yellow square is to the right of the small black square.
What is below the small black square? a small black circle or a medium yellow square?
small black circle  medium yellow square  both of them none of them