There are three blocks. We call them A, B and C. Block A has one small yellow circle. Then, we have block B with two small black squares in it. To the right of small black square number two , a medium black square and a small black triangle is small black square number one. This block also has a big yellow square. The medium black square is to the left of and below the small black triangle. Finally, above block B we have block C. It is above block A. It contains one medium black triangle.
What is below the medium black triangle? a small black square or a big yellow square?
small black square  big yellow square  both of them none of them