We have two blocks, A and B. There is one big black triangle in block A. Above a big blue triangle there is the big black triangle. Block B is to the left of block A. It contains one big black circle and a medium yellow circle. The big black circle is below and to the left of a small yellow square which is below and to the right of the medium yellow circle.
What is to the left of the big black triangle? a big black circle or a big blue triangle?
big black circle  big blue triangle  both of them none of them