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