There are two blocks. We call them A and B. Block A is above B. Block A contains a medium blue square and one medium yellow square. Below the medium yellow square there is the medium blue square. Block B contains a medium blue square, one medium black square and one medium yellow square. Below the medium yellow square and the medium black square there is the medium blue square. Below the medium yellow square there is the medium black square.
Which object is below a medium blue square? the medium yellow square that is in block A or the medium yellow square which is in block B?
the medium yellow square  that is in block A the medium yellow square  which is in block B both of them none of them