We have two blocks, A and B. Block A contains a medium black square and one medium yellow square. Below the medium yellow square there is the medium black square. Below block A there is block B which has two medium yellow squares. There is also a medium black square in this block. Medium yellow square number one is below medium yellow square number two and the medium black square. Medium yellow square number two is below the medium black square.
Which object is below a medium black square? medium yellow square number one or the medium yellow square that is in block A?
medium yellow square  number one the medium yellow square  that is in block A both of them none of them