We have three blocks. Lets call them A, B and C. One medium black square is in block A. Below block A there is block B with a medium yellow square and a medium black square in it. Below the medium black square there is the medium yellow square. Finally, there is block C which is above block A. It contains two medium yellow squares. This block also contains a medium blue square. Below a medium black square is medium yellow square number one. The medium black square is below medium yellow square number two. The medium blue square is below medium yellow square number one , the medium black square and medium yellow square number two.
Which object is below a medium black 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