If the left image contains no more than four baboons and does not contain any baby baboons.
return left image ;return baboons  in  #1 ;return number of  #2 ;return if  #3 is at most four ;return #2 that are baby ;return number of  #5 ;return if  #6 is equal to  zero ;return if  both  #4 and #7 are true
['select', 'project', 'aggregate', 'boolean', 'filter', 'aggregate', 'boolean', 'boolean']