What are the names of the schools with some players in the mid position but no goalies?
return schools ;return players of #1 ;return #2 that are in  the  mid position ;return #2 that are in  the  goalie position ;return number of  #3 for each #1 ;return number of  #4 for each #1 ;return #1 where #5 is at least one ;return #1 where #6 is zero ;return #1 in  both #7 and  #8 ;return names of #9
['select', 'project', 'filter', 'filter', 'group', 'group', 'comparative', 'comparative', 'intersection', 'project']