Complex sentence: Winnie the Pooh and Tigger Too! is the third Winnie the Pooh short from Disney, released in theatres on December 20,1974 accompanying "The Island at the Top of the World".
Split into simpler sentences: Winnie the Pooh and Tigger Too! is the third Winnie the Pooh short from Disney, released on December 20,1974. It was released theatrically together with "The Island at the Top of the World".