query: SELECT cName FROM  tryout WHERE pPos  =  'mid' EXCEPT SELECT cName FROM  tryout WHERE pPos  =  'goalie'
question: What the name of the school with some players in the mid position but no goaly?
query_toks: SELECT cName FROM tryout WHERE pPos = 'mid ' EXCEPT SELECT cName FROM tryout WHERE pPos = 'goalie '
query_toks_no_value: select cname from tryout where ppos = value except select cname from tryout where ppos = value
question_toks: What the name of the school with some players in the mid position but no goaly?