If one of the dogs is lying on grass with its head up.
return dogs ;return grass ;return #1 that is lying on #2 ;return head of #3 ;return #3 where  #4 is up ;return number of  #5 ;return if  #6 is equal to  one
['select', 'select', 'filter', 'project', 'comparative', 'aggregate', 'boolean']