There are two blocks. We call them A and B. Block A is below B. Block A contains one medium yellow square and one medium black square. The medium yellow square is below the medium black square. Block B contains three medium black squares. Below medium black square number three and medium black square number two is medium black square number one. Medium black square number two is below medium black square number three.
Which object is below a medium black square? medium black square number one or medium black square number three?
medium black square  number one medium black square  number three both of them none of them