There are two blocks. We call them A and B. Block A contains a medium blue triangle and a big yellow circle. Near to the medium blue triangle and the big yellow circle there is a big black triangle. Below block A is block B with one small blue triangle and a medium black circle in it. Below the medium black circle is the small blue triangle.
Which object is above a blue triangle? the big black triangle or the medium black circle?
the big black triangle  the medium black circle  both of them none of them