There are three blocks, A, B and C. Block B is to the left of A and block A is to the right of C. Block A contains one medium blue square. Block B contains a medium blue square and a medium black square. Below the medium black square is the medium blue square. Block C has two medium blue squares. Below a medium yellow square and medium blue square number two there is medium blue square number one. Below medium blue square number two there is the medium yellow square.
Which object is to the left of a medium blue square? the yellow thing or the medium black square?
the yellow thing the medium black square  both of them none of them