Simplify the following text for a Grade 9 native English-speaking person.
Original: 101 Dalmatians II : Patch 's London Adventure is a direct-to-video sequel to the Disney animated movie One Hundred and One Dalmatians , starring the voices of Martin Short , Jason Alexander , and Barry Bostwick .
Simplified: 101 Dalmatians II : Patch 's London Adventure is a 2003 American direct-to-video animated film released by Walt Disney Home Entertainment on January 21 , 2003 . The film is the sequel to the 1961 Disney animated film One Hundred and One Dalmatians .