We have three blocks. Lets call them A, B and C. A medium blue square and one medium black square are in block A. Below the medium black square there is the medium blue square. Block B is above block A. It has one medium black square. Below block A there is block C. It has two medium blue squares. Medium blue square number one is below medium blue square number two.
Which object is below a medium blue square? the medium black square that is in block A or the medium black square that is in block B?
the medium black square  that is in block A the medium black square  that is in block B both of them none of them