We have two blocks, A and B. One medium blue circle is in block A. Above block A is block B. It contains one small yellow triangle, a big black triangle and one medium black triangle. It also contains one medium blue circle. The medium blue circle is near to and below the big black triangle which is above the medium black triangle. The small yellow triangle is to the left of the big black triangle. It is near to the medium black triangle.
What is above the medium black triangle? a big black thing or a medium blue circle?
big black thing medium blue circle  both of them none of them