Question: Long John Silver, starring Robert Newton, is based on the pirate from what 1950 Walt Disney live action film?

full_context: Document 1: Treasure Island (1972 live-action film): Treasure Island is a 1972 adventure film, based on the novel "Treasure Island" by Robert Louis Stevenson. The film stars Orson Welles as Long John Silver, Walter Slezak as Squire Trelawney, Rik Battaglia as Captain Smollett, and Ángel del Pozo as Doctor Livesey. This adaptation of "Treasure Island" was released in several different language versions, each with a different director.
Document 2: Animal Treasure Island: Animal Treasure Island (どうぶつ宝島 , Dōbutsu Takarajima ) is a 1971 Japanese anime feature film adaptation of Robert Louis Stevenson's "Treasure Island". The film was produced by Toei Animation and released on the studio's 20th anniversary. It was licensed and distributed in English-language countries by Discotek Media.
Document 3: Long John Silver (film): Long John Silver, also known as Long John Silver's Return to Treasure Island, is a 1954 American-Australian Adventure film about the eponymous pirate from "Treasure Island", starring Robert Newton as Silver and Rod Taylor as Israel Hands.
Document 4: Treasure Island (1985 film): Treasure Island (French: L'île au trésor ) is a 1985 adventure film directed by Chilean filmmaker Raúl Ruiz. It was screened in the Un Certain Regard section at the 1991 Cannes Film Festival. France, Great Britain and the United States funded Ruiz’s obscure and complex adaptation of the classic coming-of-age novel "Treasure Island" written by Robert Louis Stevenson. "Treasure Island" stars Melvil Poupaud as Jim Hawkins/Jonathan, a familiar face in Ruiz filmography, along with a few other popular actors like Anna Karina playing his mother.
Document 5: Treasure Island (1999 film): Treasure Island is a 1999 film adaptation of Robert Louis Stevenson's novel "Treasure Island". It was written & directed by Peter Rowe, and starred Kevin Zegers as Jim Hawkins and Jack Palance as Long John Silver in his final film appearance.
Document 6: Kit Taylor: Kit Taylor (born 1942) is an Australian actor, the son of Grant Taylor. He made his acting debut as Jim Hawkins in the film "Long John Silver" (1954) and the associated TV series "The Adventures of Long John Silver". He went on to have an acting career as an adult.
Document 7: Treasure Island (1950 film): Treasure Island is a 1950 live action adventure film produced by Walt Disney Productions, adapted from the Robert Louis Stevenson's 1883 novel "Treasure Island". It stars Bobby Driscoll as Jim Hawkins and Robert Newton as Long John Silver. "Treasure Island" is notable for being Disney's first completely live-action film and the first screen version of "Treasure Island" made in color. It was filmed in England on location and at Denham Film Studios, Buckinghamshire.
Document 8: Return to Treasure Island (1954 film): Return to Treasure Island is a 1954 American film directed by Ewald André Dupont. The film is about modern-day adventurers (circa 1950s) exploring the desert island from Robert Louis Stevenson's frequently filmed novel "Treasure Island". Though Stevenson's story was fictional, it is treated as historical for the purposes of the film's plot.
Document 9: Treasure Island (1938 film): Treasure Island (Russian: Остров сокровищ , "Ostrov sokrovishch " is a 1938 Soviet adventure film directed by  Vladimir Vaynshtok and starring Osip Abdulov, Mikhail Klimov and Nikolai Cherkasov. It is an adaptation of Robert Louis Stevenson's novel "Treasure Island". The film was one of several British literary classics turned into films in the Soviet Union during the era. A number of changes were made to introduce anti-British elements and to promote Stalinist ideology. The book's character of Jack Hawkins is transformed into a young woman named Jenny, and the characters are attempting to find the treasure in order to fund an anti-British rebellion. An English language version was directed by David Bradley.
Document 10: The Adventures of Long John Silver: The Adventures of Long John Silver is a TV series about the Long John Silver character from "Treasure Island". It was made in 1954 in colour in Australia for the American and British markets before the development of Australian television.
Document 11: Treasure Island (1934 film): Treasure Island is a 1934 film adaptation of Robert Louis Stevenson’s famous 1883 novel "Treasure Island". Jim Hawkins (Jackie Cooper) discovers a treasure map and travels on a sailing ship to a remote island, but pirates led by Long John Silver (Wallace Beery) threaten to take away the honest seafarers’ riches and lives.
Document 12: The Secret of Treasure Island: The Secret of Treasure Island is a 1938 Columbia movie serial based on Robert Louis Stevenson's novel "Treasure Island". The serial is broken into fifteen chapters. Reporter Larry Kent travels to an island in the Caribbean to investigate the disappearance of his colleague, and discovers that the island contains a lost treasure trove of gold. Kent meets Toni Morrell, the daughter of a shipmate whose partner knew the location of the treasure, who helps him in his investigation and they search for the treasure together. During their investigation they are opposed by a villain named Collins and Dr. X., who attempts to kill Kent. Kent defeats Dr. X. in the final installment of the serial.
Document 13: Long John Silver: Long John Silver is a cunning and opportunistic pirate who was quartermaster under the notorious Captain Flint. Long John Silver had a pet parrot called Captain Flint, often seen sitting on his shoulder where she would nibble on seeds. Silver claims to have served in the Royal Navy and lost his leg under "the immortal Hawke". "His left leg was cut off close by the hip, and under the left shoulder, he carried a crutch, which he managed with wonderful dexterity, hopping about upon it like a bird. He was very tall and strong, with a face as big as a ham—plain and pale, but intelligent and smiling." ("Treasure Island" (1883) by Robert Louis Stevenson page 82). He claims to have been the only man whom Flint ever feared. Like many of Stevenson's characters, there is more than a modicum of duality in the character; ostensibly Silver is a hardworking and likeable seaman, and it is only as the plot unfolds that his villainous nature is gradually revealed. His relationship with Jim Hawkins, the novel's protagonist and narrator, is interesting, as he serves as a mentor and eventually father-figure to Jim, creating much shock and emotion when it is discovered that he is in charge of the mutiny, and especially when Jim must confront and fight him later on. Although willing to change sides at any time to further his own interests, Silver has compensating virtues: he is wise enough to pay attention to money management, in contrast to the spendthrift ways of most of the pirates, and is physically courageous despite his disability; for instance, when Flint's cache is found to be empty, he coolly stands his ground against five grown men despite having only Jim, a boy in his teens, to back him.
Document 14: Kidnapped (1960 film): Kidnapped is a 1960 Walt Disney Productions film adaptation of Robert Louis Stevenson's classic 1886 novel "Kidnapped". It stars Peter Finch and James MacArthur, and was Disney's second production based on a novel by Stevenson, the first being "Treasure Island". It also marked Peter O'Toole's feature film debut.
Document 15: Treasure Island: Treasure Island is an adventure novel by Scottish author Robert Louis Stevenson, narrating a tale of "buccaneers and buried gold".
ground_truth: Treasure Island