What are the names of all the states with college students playing in the mid position but no goalies?
return states ;return college students of #1 ;return positions of #2 ;return #2 where #3 is  mid ;return #2 where #3 is  not goalie ;return #1 of both #4 and #5 ;return names of #6
['select', 'project', 'project', 'comparative', 'comparative', 'intersection', 'project']