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