Are all the cubes the same material as the cylinder?
return cubes ;return cylinder ;return material of #1 ;return material of #2 ;return #1 where #3 is the  same as #4 ;return #1 besides  #5 ;return number of  #6 ;return is #7 equal to zero
['select', 'select', 'project', 'project', 'comparative', 'discard', 'aggregate', 'boolean']