We have three blocks. Lets call them A, B and C. Block A is below and B is above C. Block A has one medium yellow square. Below the medium yellow square there is a medium black square. Block B has a medium black square. Block C has a medium black square and one medium yellow square. The medium black square is below the medium yellow square.
Which object is below a medium black square? the medium yellow square which is in block A or the medium yellow square that is in block C?
the medium yellow square  which is in block A the medium yellow square  that is in block C both of them none of them