There are two blocks. We call them A and B. A big blue square and one small black triangle are in block A. Below the small black triangle there is the big blue square. Above block A is block B. It has one small black triangle and a medium yellow circle. The small black triangle is below a medium blue square which is below and to the right of the medium yellow circle.
What is below the medium blue square? a medium yellow circle or a small black triangle?
medium yellow circle  small black triangle  both of them none of them