There are three blocks. We call them A, B and C. Blocks C and A are below B. Block A contains one medium black square. Block B has a medium yellow square. This block also contains one medium blue square. The medium yellow square is below the medium blue square. Block C has two medium black squares. A medium yellow square is also in this block. Below the medium yellow square there is medium black square number two. Medium black square number one is below the medium yellow square and medium black square number two.
Which object is below a medium yellow square? the medium black square which is in block A or medium black square number two?
the medium black square  which is in block A medium black square  number two both of them none of them