There are two blocks. Lets call them A and B. Block A contains a medium black square, a medium blue square and a medium yellow square. The medium blue square is below the medium yellow square. The medium black square is touching the bottom edge of this block. It is below the medium yellow square and the medium blue square. Above block A we have block B with two medium yellow squares in it. Medium yellow square number one is touching the bottom edge of this block. It is below medium yellow square number two.
Which object is below a medium yellow square? the medium yellow square that is in block A or the medium yellow square that is touching the bottom edge of a block?
the medium yellow square  that is in block A the medium yellow square  that is touching the bottom edge of a block  both of them none of them