We have three blocks. We call them A, B and C. Block A has a medium blue circle, a small yellow circle and a small black square. This block also has one big yellow square. Near to, to the right of and above the small black square is the medium blue circle. It is near to the small yellow circle which is to the right of, near to and below the small black square. Below block A there is block B with a small yellow triangle in it. A big black circle is below the small yellow triangle. Finally, we have block C to the right of block A. It contains one big black triangle, a big black square and a medium blue square. Near to, to the left of and above the big black square there is the big black triangle. Near to and to the right of the medium blue square there is the big black square.
What is below the small yellow triangle? a big black circle or a small black square?
big black circle  small black square  both of them none of them