If all dogs are looking up at the camera, at least one dog has an open mouth, and no image contains more than two dogs.
return images ;return dogs in  #1 ;return #2 that are looking up at the  camera ;return number of  #2 ;return number of  #3 ;return if  #5 is equal to  #4 ;return mouth of #2 ;return #2 where  #7 is open ;return number of  #8 ;return if  #9 is at least one ;return if  both  #6 and #10 are true ;return number of  #2 for each  #1 ;return #1 where  #12 is higher than two ;return number of  #13 ;return if  #14 is equal to  zero ;return if  both  #11 and #15 are true
['select', 'project', 'filter', 'aggregate', 'aggregate', 'boolean', 'project', 'comparative', 'aggregate', 'boolean', 'boolean', 'group', 'comparative', 'aggregate', 'boolean', 'boolean']