Input (grade 13): The fourth film in the Walt Disney Animated Classics series, Dumbo is based upon the storyline written by Helen Aberson and illustrated by Harold Pearl for the prototype of a novelty toy ("Roll-a-Book").
Output (grade 12): The fourth film in the Walt Disney Animated Classics, Dumbo is based upon a child's book of the same name by Helen Aberson and illustrated by Harold Perl.