Find the names of states that have some college students playing in the mid position but not in the goalie position.
return states ;return college students of #1 ;return positions of #2 ;return #1 where #3 is  mid ;return #1 where #3 is  not goalie ;return names of both #4 and #5
['select', 'project', 'project', 'comparative', 'comparative', 'intersection']