There are three blocks. Lets call them A, B and C. One medium yellow square is in block A. Block B is below block A. It has a medium black square. Below block A there is block C with two medium yellow squares in it. Below medium yellow square number two there is medium yellow square number one. Below a medium black square is medium yellow square number two. Below the medium black square there is medium yellow square number one.
Which object is below a medium yellow square? the medium black square that is in block C or the medium black square which is in block B?
the medium black square  that is in block C the medium black square  which is in block B both of them none of them