How many other objects are the same material as the green object?
return objects ;return #1 that is green ;return #1 besides  #2 ;return material of #2 ;return material of #3 ;return #3 where #4 is the  same as #5 ;return number of  #6
['select', 'filter', 'discard', 'project', 'project', 'comparative', 'aggregate']