Question: What Tolkien book did Arthur Gardner Rankin Jr. created an animation of?

Context paragraphs:
The New Adventures of Pinocchio (TV series): The New Adventures of Pinocchio is a syndicated stop motion animated television series produced by Rankin/Bass Productions in the United States and made by Dentsu Studios in Japan.  Created by Arthur Rankin, Jr. and his partner Jules Bass, it was based on the book "The Adventures of Pinocchio" written by Italian author, Carlo Collodi.  The series was Rankin/Bass' first production to be made in "Animagic", a stop motion puppet technique which, in association with the company, was done by Tadahito Mochinaga's MOM Productions (before Mochinaga leaves for China after the finished animation for "Mad Monster Party? ").  A total of 130 five-minute "chapters" were produced in 1960–61.  These segments made up a series of five-chapter, 25-minute episodes.  During 1963–64, the series was also aired in Japan on Fuji TV as part of another stop motion TV series, "Prince Ciscorn" (シスコン王子, lit.  "Ciscorn Ōji"), based on the manga by Fujiko Fujio and also produced by Tadahito Mochinaga for Studio KAI and Dentsu.

The Stingiest Man in Town: The Stingiest Man in Town (町一番のけちんぼう , Machi Ichiban no Kechinbō ) (1978), based on Charles Dickens's "A Christmas Carol", is a Christmas special created by Arthur Rankin Jr. and Jules Bass, which featured traditional animation rather than the Animagic most often used by the company.  It was an animated remake of a long-unseen, but quite well received, live-action musical special (also called "The Stingiest Man in Town") which had starred Basil Rathbone, Martyn Green, and Vic Damone.  The live-action version had been telecast on December 23, 1956, on the NBC anthology series "The Alcoa Hour", and was published on DVD in 2011, by VAI.  The animated remake first aired December 23, 1978, in the United States on ABC, and was telecast in Japan the next day.

Atlas Model Railroad: Stephan Schaffan, Sr., an immigrant of Czechoslovakia founded the Atlas Tool Company in the garage of his home in Newark, New Jersey, in 1924.  In 1933 his son, Stephan Schaffan, Jr., came to work for his father at the age of sixteen.  Steve Jr. built model airplanes and frequented a local hobby shop.  He would often ask the owner if there was anything he could do to earn some extra spending money.  Not taking his inquiries seriously, the store owner challenged Schaffan to come up with better track components using the materials available in the shop.  In those days, railroad modelers had to assemble and build everything from scratch.  Steve Jr. created a "switch kit" which sold so well, that the entire family worked on them in the basement at night, while doing business as usual in the machine shop during the day.

The Bermuda Depths: The Bermuda Depths is a Japanese / American co-production 1978 fantasy film originally broadcast as a made-for-TV movie written by Arthur Rankin Jr. of Rankin/Bass fame.  Special effects and creature elements were handled by Tsuburaya Productions, most famous for the "Ultraman" franchise.  The movie first aired in the United States January 27, 1978 on ABC, and was later released to theaters in Japan.

The Hobbit (1977 film): The Hobbit is a 1977 animated musical television special created by Rankin/Bass, a studio known for their holiday specials, and animated by Topcraft, a precursor to Studio Ghibli, using lyrics adapted from the book.  The film is an adaptation of the 1937 book of the same name by J. R. R. Tolkien and was first broadcast on NBC in the United States on Sunday, November 27, 1977.

Eric Gardner: Eric Arthur Gardner (27 June 1881 – 24 May 1905) was an Australian rules footballer who played with Melbourne in the Victorian Football League (VFL).  The younger brother of Corrie Gardner, Eric was a long kicking forward.  He played as a wingman and missed out on playing in Melbourne's 1900 premiership side, in his debut season, through injury.

Arthur Rankin Jr.: Arthur Gardner Rankin Jr. (July 19, 1924 – January 30, 2014) was an American director, producer and writer, who mostly worked in animation.  A part of Rankin/Bass Productions with his friend Jules Bass, he created stop-motion animation features such as "Rudolph the Red Nosed Reindeer" and the 1977 cartoon animation of "The Hobbit".  He is credited on over 1,000 television programs.

The Last Unicorn (film): The Last Unicorn is a 1982 animated fantasy film directed and produced by Arthur Rankin Jr. and Jules Bass.  It was produced by Rankin/Bass Productions for ITC Entertainment and animated by Topcraft.  Based on the novel "The Last Unicorn" written by Peter S. Beagle, who also wrote the film's screenplay, the film is about a unicorn who, upon learning that she is the last of her species in the world, goes on a quest to find out what has happened to the others of her kind.

Arthur Gardner (diplomat): Arthur Gardner (1889–1967) was a United States foreign diplomat and American ambassador to Cuba 1953-1957.  Gardner was a close confident of President Dwight D. Eisenhower and was also strongly pro-Batista.

Arthur Gardner (producer): Arthur Gardner (born Arthur Goldberg; June 7, 1910 – December 19, 2014) was an American actor and film producer.  He was known for his television western, "The Rifleman".  He was a voting member of the Academy of Motion Picture Arts and Sciences.

Supporting paragraphs: Arthur Rankin Jr. The Hobbit (1977 film)
Answer: The Hobbit