Is there a blue cube that is the same size as a gray cube?
return cubes ;return #1 that are gray ;return #1 that are blue ;return sizes of #2 ;return sizes of #3 ;return #3 where #5 is  the same as any of #4 ;return number of  #6 ;return if #7 is  at least one
['select', 'filter', 'filter', 'project', 'project', 'comparative', 'aggregate', 'boolean']