If in the left image, two furry dogs are seen wearing packs on their backs.
return dogs ;return #1 that are furry ;return back of #2 ;return packs ;return #2 where  #3 has #4 on ;return #5 in  the  left image ;return number of  #6 ;return if  #7 is equal to  two
['select', 'filter', 'project', 'select', 'comparative', 'filter', 'aggregate', 'boolean']