How many cylinders are the same size and material?
return cylinders ;return sizes of #1 ;return materials of #1 ;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']