There are three blocks. We call them A, B and C. A small yellow circle and one small blue triangle are in block A. The small yellow circle is below, to the right of and near to the small blue triangle. Block B is to the right of block A. It has a medium yellow triangle, a medium blue circle and one medium yellow circle. There is also one big black circle touching the bottom edge of this block. To the right of, near to and above the big black circle is the medium yellow triangle. To the left of and above the big black circle there is the medium blue circle. The medium yellow circle is touching the bottom edge of this block. To the left of block B there is block C which has a small black triangle, one big blue circle and one medium blue square. The small black triangle is to the left of and near to the big blue circle which is below, to the right of and far from the medium blue square.
What is to the left of the medium yellow circle? a small yellow circle or a big blue circle?
small yellow circle  big blue circle  both of them none of them