We have three blocks. We call them A, B and C. A medium blue square is in block A. To the left of block A there is block B with a medium yellow circle in it. The medium yellow circle is to the right of and touching a big blue triangle which is to the left of a small black circle and a small blue square. Above block A there is block C. It contains two small blue circles. Small blue circle number one is touching the bottom edge of this block. There is also a medium yellow square in this block. This block also contains a small yellow triangle. To the left of and near to small blue circle number two there is small blue circle number one. This block also has a big black square. It is touching the right edge of this block. Near to, to the left of and below the big black square is the medium yellow square. Small blue circle number one is below the medium yellow square.
What is to the left of the big black square? a medium blue square or a medium yellow square?
medium blue square  medium yellow square  both of them none of them