There are three blocks. We call them A, B and C. Block A has two medium black squares. Medium black square number one is touching the bottom edge of this block. This object is below medium black square number two. To the right of block A we have block B. It has a medium blue square. Below block B there is block C which contains a medium black square. Below the medium black square there is a medium yellow square.
What is to the left of the blue thing? a medium yellow square or a medium black square?
medium yellow square  medium black square  both of them none of them