How many items are the same shape as the small gray thing behind the large green thing?
return small thing  ;return #1 that is gray ;return large thing  ;return #3 that is green ;return #2 behind #4 ;return items ;return shape of #5 ;return shapes of #6 ;return #6 where #7 is the  same as #8 ;return number of  #9
['select', 'filter', 'select', 'filter', 'filter', 'select', 'project', 'project', 'comparative', 'aggregate']