There are two blocks. We call them A and B. One big black triangle is in block A. There are also a small blue triangle and a small black square in this block. Above the small black square and the big black triangle there is the small blue triangle. Block B is above block A. It contains one medium yellow circle and one small black triangle. There are also a small blue triangle and a medium blue circle in this block. The medium yellow circle is above the medium blue circle. Above the small black triangle and the medium blue circle there is the small blue triangle.
Which object is above a black triangle? the medium blue circle or the yellow shape?
the medium blue circle  the yellow shape both of them none of them