There are three blocks. Lets call them A, B and C. Block B is to the left of A and block A is to the left of C. Block A has one big black square. The big black square is above a small blue triangle. Block B has a medium yellow triangle and one small yellow square. The medium yellow triangle is to the right of the small yellow square. It also contains one big blue square. To the right of the medium yellow triangle and the small yellow square there is the big blue square. Block C has one big black triangle.
What is to the left of the big black triangle? a small yellow square or a big black square?
small yellow square  big black square  both of them none of them