If all of the birds in the images are sitting in the branches of trees.
return birds ;return trees ;return the  branches of #2 ;return #1 sitting in  #3 ;return the  number of  #1 ;return the  number of  #4 ;return if  #5 is equal to  #6
['select', 'select', 'project', 'filter', 'aggregate', 'aggregate', 'boolean']