Which of these films was the 51st Disney animated feature film?

"Winnie the Pooh" is a 2011 American animated musical comedy film produced by Walt Disney Animation Studios and released by Walt Disney Pictures. The 51st Disney animated feature film, the film was inspired by A. A. Milne's stories of the same name and is part of Disney's Winnie the Pooh franchise, the fifth theatrical "Winnie the Pooh" film released and the second theatrical "Winnie the Pooh" feature after the 1977 film "The Many Adventures of Winnie the Pooh". It is also, to date, Disney's last animated film using traditional animation.

Jim Cummings and Travis Oates reprise their voice roles as Winnie the Pooh and Tigger and Piglet, while newcomers Tom Kenny, Craig Ferguson, Bud Luckey and Kristen Anderson-Lopez provide the voices of Rabbit, Owl, Eeyore and Kanga, respectively. In the film, the aforementioned residents of the Hundred Acre Wood embark on a quest to save Christopher Robin from an imaginary culprit while Pooh deals with a hunger for honey. The film is directed by Stephen Anderson and Don Hall, adapted from Milne's books by a story team led by Burny Mattinson, produced by Peter Del Vecho, Clark Spencer, John Lasseter and Craig Sost, and narrated by John Cleese.