If right image shows a four-wheeled cart puled by one horse.
return right image ;return cart in  #1 ;return #2 that is four-wheeled ;return horse in  #1 ;return #4 that #3 is puled by ;return number of  #5 ;return if  #6 is equal to  one
['select', 'project', 'filter', 'project', 'filter', 'aggregate', 'boolean']