We have three blocks, A, B and C. Block A contains a big yellow square and a small blue square. It also has a big blue circle. A big black square is touching the bottom edge of this block. One big yellow circle is also in this block. This block also has a small blue circle. To the right of the small blue square and the big black square is the big blue circle.. It is above the big yellow square. Then, there is block B. It contains one medium black circle, a small black square and a small blue circle. The small black square is touching the right edge of this block. This object is to the right of the small blue circle. To the left of and above the small black square is the medium black circle. Block C is to the right of block A and to the left of block B. It contains two small blue triangles. Small blue triangle number one is below a small black triangle. It is near to small blue triangle number two. To the left of small blue triangle number two there is the small black triangle.
Which object is to the left of a small black triangle? the medium black thing or the big yellow circle?
the medium black thing the big yellow circle  both of them none of them