There are two blocks, A and B. Block A is above B. Block A has a medium yellow square and a medium black square. Below the medium black square is the medium yellow square. Block B contains two medium black squares. Below a medium yellow square is medium black square number one. This block also contains a medium blue square. It is below medium black square number two and the medium yellow square. The medium yellow square is below medium black square number two. Below the medium blue square there is medium black square number one.
Which object is below a medium black square? the medium yellow square that is in block A or the medium yellow square that is in block B?
the medium yellow square  that is in block A the medium yellow square  that is in block B both of them none of them