We have three blocks, A, B and C. Block B is above blocks C and A. Block A contains one medium black square. Block B contains a medium yellow square and a medium black square. Below the medium black square is the medium yellow square. And block C has one medium blue square. It also has one medium black square. Below the medium black square there is the medium blue square.
Which object is below a yellow thing? 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