We have three blocks, A, B and C. Block A contains one medium blue square. Block B is above block A. It has two medium black squares. It also contains one medium yellow square. The medium yellow square is below medium black square number two and medium black square number one. Medium black square number one is below medium black square number two. Below block A there is block C with a medium yellow square in it.
Which object is above a medium yellow square? medium black square number two or medium black square number one?
medium black square  number two medium black square  number one both of them none of them