There are two blocks, A and B. Block A has one medium black circle, a big yellow triangle and one medium black triangle. Above the medium black triangle and the medium black circle is a small yellow triangle. Below and near to the medium black triangle is the medium black circle. Block B is above block A. It contains a big blue circle and one small yellow circle. The big blue circle is below and to the left of the small yellow circle.
What is below the blue thing? a big yellow triangle or a medium black circle?
big yellow triangle  medium black circle  both of them none of them