There are three blocks, A, B and C. Block C is above block A and below block B. Block A has one big blue triangle. Block B has one big blue square. This block also has a medium blue triangle. A small black circle is to the right of the medium blue triangle and the big blue square. Block C has a small black circle.
What is below the medium object? a big blue square or a big blue triangle?
big blue square  big blue triangle  both of them none of them