There are three blocks. Lets call them A, B and C. Block A contains one medium black square. Block B is to the right of block A. It has one medium black square. To the left of block B there is block C which contains a medium yellow square and a medium blue square. Below a medium black square and the medium blue square there is the medium yellow square. The medium black square is below the medium blue square.
Which object is to the left of a medium black square? the medium blue square or the medium yellow square?
the medium blue square  the medium yellow square  both of them none of them