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