If a brown dog with large pointy ears is looking directly forward.
return dog ;return #1 that is  brown ;return ears of  #2 ;return #2 where #3 are  large ;return #2 where #3 are  pointy ;return #2 in  both  #4 and #5 ;return if  #6 is  looking directly forward
['select', 'filter', 'project', 'comparative', 'comparative', 'intersection', 'boolean']