Which physicians are affiliated with both Surgery and Psychiatry departments? Tell me their names.
return physicians ;return departments that  #1 are affiliated with  ;return #1 where #2 is  Surgery ;return #1 where #2 is  Psychiatry ;return #1 in both #3 and #4 ;return the  names of #5
['select', 'project', 'comparative', 'comparative', 'intersection', 'project']