premise: Winnie the Pooh and a Day for Eeyore is a 1983 Disney Winnie the Pooh animated featurette, based on two chapters from the books "Winnie-the-Pooh" and "The House at Pooh Corner", originally released theatrically on March 25, 1983, with the 1983 re-issue of "The Sword in the Stone". It is the fourth and final of Disney's original theatrical featurettes adapted from the Pooh books by A. A. Milne.
hypothesis: A. A. Milne was successful
reason: He wrote Winnie the Pooh so of course he was succesful