We have three blocks. We call them A, B and C. Block A is to the right of B and block B is to the right of C. Block A has one medium blue square. Block B contains one medium yellow square. Below the medium yellow square there is a medium blue square. Block C has one medium black square and a medium yellow square. Below the medium yellow square there is the medium black square.
Which object is to the left of a medium blue square? the medium yellow square which is in block B or the medium yellow square which is in block C?
the medium yellow square  which is in block B the medium yellow square  which is in block C both of them none of them