We have three blocks. Lets call them A, B and C. Block A has a big yellow square. Below the big yellow square there is a big yellow circle. The big yellow square is touching the right edge of this block. Then, there is block B with a small blue triangle, one big black triangle and a big black square in it. Far from and to the left of the big black square there is the small blue triangle. The big black triangle is above the big black square. Above block B and below block A there is block C. It contains two medium blue triangles. This block also contains a big black circle and a medium black square. To the right of medium blue triangle number one is the medium black square. Above medium blue triangle number two is a medium black circle. Medium blue triangle number two is touching the bottom edge of this block. There is also one small yellow square in this block. It is near to, to the left of and above the medium black circle.
What is above the medium black circle? a small yellow square or a big black square?
small yellow square  big black square  both of them none of them