If at least one image in the pair contains a dog standing up with all four legs on the ground.
return dog ;return #1 that is  standing up ;return legs of  #2 ;return the  ground ;return #3 that are  on #4 ;return number of #5 for each #2 ;return #2 where #6 is  equal to four ;return if  #7 is  in  at least one image
['select', 'filter', 'project', 'select', 'filter', 'group', 'comparative', 'boolean']