There are two blocks, A and B. Block A is to the left of B. Block A contains a small blue square and a medium blue circle. There is also a small black square in this block. The small blue square is above, near to and to the left of the medium blue circle. Block B has one medium black triangle, a medium blue triangle and one big yellow square. One small black triangle is also in this block. There is also one small yellow circle touching the bottom edge of this block. This block also has one small black square and a medium blue square. Above and to the right of the small black square there is the small black triangle. This object is to the left of the medium blue square.. The medium black triangle is touching the right edge of this block. It is above and to the right of the medium blue triangle.
What is to the left of the small black triangle? a small black square or a big yellow square?
small black square  big yellow square  both of them none of them