How many objects are made of the same material, share the same color?
return objects ;return colors of #1 ;return materials that  #1 are made of ;return #1 where #2 are the same  ;return #1 where #3 are the same  ;return #1 in both #4 and  #5 ;return number of #6
['select', 'project', 'project', 'comparative', 'comparative', 'intersection', 'aggregate']