We have two blocks. We call them A and B. Block A is below B. Block A contains one medium blue square, one small yellow triangle and a big yellow square. The small yellow triangle is to the left of, near to and below the big yellow square. The medium blue square is touching the bottom edge of this block. It is below the small yellow triangle. Block B has one big black triangle and one medium yellow square. The big black triangle is to the left of, near to and below the medium yellow square.
What is below the big triangle? a medium yellow square or a blue thing that is touching the bottom edge of a block?
medium yellow square  blue thing that is touching the bottom edge of a block  both of them none of them