If there is a total of 1 dog facing right is a grassy area.
return dogs ;return area ;return #2 that is  grassy ;return #1 in  #3 ;return #4 that are  facing right ;return number of #5 ;return sum of  #6 ;return if  #7 is  equal to one
['select', 'select', 'filter', 'filter', 'filter', 'aggregate', 'aggregate', 'boolean']