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