We have three blocks. Lets call them A, B and C. Block A contains a big black triangle. To the left of block A we have block B. It contains a small black circle, a medium black triangle and a small blue triangle. There is also one small yellow circle in this block. The small black circle is near to the small yellow circle. The medium black triangle is above the small blue triangle and the small yellow circle.. The small black circle is below and to the right of the medium black triangle. To the left of block A there is block C with one medium blue square and one big yellow square in it. The medium blue square is to the right of and below the big yellow square.
What is to the left of the big black triangle? a small black circle or a medium black triangle?
small black circle  medium black triangle  both of them none of them