What are the names of Art instructors who have taught a course, and the corresponding course id?
return instructors ;return #1 of Art ;return #2 who  have taught a course ;return names of #3 ;return course of #4 ;return id of #5 ;return #4 ,  #6
['select', 'filter', 'filter', 'project', 'project', 'project', 'union']