We have three blocks. We call them A, B and C. There is one small black triangle in block A. Then, we have block B with a small blue triangle and one big blue triangle in it. A small black triangle is below the big blue triangle. Above the small black triangle there is the small blue triangle. It is to the right of and below the big blue triangle. Block C is above block B and to the right of block A. It contains one big yellow square, a small blue square and a medium blue triangle. The medium blue triangle is touching the right edge of this block. Near to and to the right of the small blue square there is the big yellow square. It is touching the bottom edge of this block. It is below the medium blue triangle.
What is to the left of the yellow shape? a small black triangle or a big blue triangle?
small black triangle  big blue triangle  both of them none of them