We have three blocks. Lets call them A, B and C. Block C is below block B and it is above block A. Block A has one big blue triangle. There is also a small blue triangle in this block. The small blue triangle is near to the big blue triangle. Block B contains a big blue square and one medium black circle. The big blue square is to the right of the medium black circle. Block C has one big yellow square. A medium black triangle is above and to the left of the big yellow square.
What is below the big blue square? a medium black triangle or a big blue triangle?
medium black triangle  big blue triangle  both of them none of them