We have three blocks, A, B and C. A medium yellow triangle and a medium yellow square are in block A. The medium yellow triangle is above and to the left of the medium yellow square. Block B is to the right of block A. It contains one medium yellow triangle, a big black triangle and a big black square. This block also contains one big blue triangle. It is to the left of the big black square. The medium yellow triangle is near to, to the right of and above the triangle which is to the left of the big black square. It is near to and to the left of the big black square. Finally, we have block C above block B. It has one medium yellow square, one big black square and one big yellow square. The medium yellow square is touching the bottom edge of this block. This object is near to, below and to the left of the big black square. This shape is to the right of the big yellow square. The big black square is touching the right edge of this block. It is to the right of the big yellow square.
What is to the left of the big black triangle? a big yellow square or a medium yellow square?
big yellow square  medium yellow square  both of them none of them