There are three blocks, A, B and C. Block A has a medium black square. Above block A we have block B. It contains two medium blue squares. It also contains one medium yellow square. It is below medium blue square number two. Medium blue square number one is below the medium yellow square and medium blue square number two. Below block B there is block C. It contains one medium blue square.
What is above the black thing? a yellow object or a medium blue square?
yellow object medium blue square  both of them none of them