If there are three dogs sitting or laying on the grass.
return dogs ;return grass ;return #1 that are sitting on #2 ;return #1 that are laying on #2 ;return #3 , #4 ;return number of  #5 ;return if  #6 is equal to  three
['select', 'select', 'filter', 'filter', 'union', 'aggregate', 'boolean']