There are three blocks. Lets call them A, B and C. Two medium blue squares are in block A. Medium blue square number one is below a medium black square and medium blue square number two. It is touching the bottom edge of this block. The medium black square is below medium blue square number two. Block B is below block A. It has one medium yellow square. Below block A there is block C which contains a medium blue square.
What is above the yellow thing? a black object or a medium blue square?
black object medium blue square  both of them none of them