If one image shows a pair of camera-facing dogs with their heads next to one another.
return dogs ;return #1 that are camera-facing ;return head of #2 ;return #2 where  #3 are next one another ;return images of #4 ;return number of  #4 for each  #5 ;return #5 where  #6 is equal to  two ;return number of  #7 ;return if  #8 is equal to  one
['select', 'filter', 'project', 'comparative', 'project', 'group', 'comparative', 'aggregate', 'boolean']