There are two blocks. Lets call them A and B. There is one medium blue triangle in block A. To the left of block A there is block B with one big blue circle, a medium yellow triangle and one big blue triangle in it. A big black square is touching the bottom edge of this block. Above the big blue triangle there is the big blue circle. To the left of the big blue triangle is the medium yellow triangle. This block also has a medium black circle. The big black square is near to and below the medium yellow triangle. It is to the left of the big blue triangle.
What is to the left of the medium blue triangle? a medium black circle or a big blue triangle?
medium black circle  big blue triangle  both of them none of them