If each dog has an open mouth and one dog is wearing a harness.
return dogs ;return mouths of #1 ;return #1 where  #2 are open ;return number of  #1 ;return number of  #3 ;return if  #5 is equal to  #4 ;return harness ;return #1 wearing #7 ;return number of  #8 ;return if  #9 is equal to  one ;return if  both  #6 and #10 are true
['select', 'project', 'comparative', 'aggregate', 'aggregate', 'boolean', 'select', 'filter', 'aggregate', 'boolean', 'boolean']