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