There are three blocks. Lets call them A, B and C. Block B is to the left of A. Block C is above B. Block A contains a big black triangle. Block B contains one small black triangle and one medium yellow square. The small black triangle is to the right of the medium yellow square. Block C contains a medium yellow triangle, a medium black circle and one big black triangle. Above the medium black circle and the big black triangle is the medium yellow triangle. The medium black circle is touching the right edge of this block.
What is above the square? a big black triangle which is in block A or a big black triangle that is in block C?
big black triangle  which is in block A big black triangle  that is in block C both of them none of them