is the largest ball made of the same material as the largest cube?
return cubes ;return the   largest  #1 ;return the   material of #2 ;return balls ;return the   largest  #4 ;return the   material of #5 ;return if  #3 and #6 are the   same
['select', 'aggregate', 'project', 'select', 'aggregate', 'project', 'boolean']