query: SELECT rID FROM Rating EXCEPT SELECT rID FROM Rating WHERE stars  =  4
question: are finding a id them reviewer them which is not giving 4 a star.
query_toks: SELECT rID FROM Rating EXCEPT SELECT rID FROM Rating WHERE stars = 4
query_toks_no_value: select rid from rating except select rid from rating where stars = value
question_toks: are finding a id them reviewer them which is not giving 4 a star.