If the combined images contain no more than three dogs, and at least two dogs are standing on all fours.
return images ;return dogs in  #1 ;return all fours of #2 ;return #2 standing on #3 ;return number of  #2 ;return number of  #4 ;return if  #5 is at most three ;return if  #6 is at least two ;return if  both  #7 and #8 are true
['select', 'project', 'project', 'filter', 'aggregate', 'aggregate', 'boolean', 'boolean', 'boolean']