If there are no more than three dogs and one of them has it's mouth open.
return dogs ;return mouth of #1 ;return #1 where  #2 is open ;return number of  #1 ;return number of  #3 ;return if  #4 is at most three ;return if  #5 is equal to  one ;return if  both  #6 and #7 are true
['select', 'project', 'comparative', 'aggregate', 'aggregate', 'boolean', 'boolean', 'boolean']