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