Question: In what year was Topcraft, the animator of Nausicaä of the Valley of the Wind, established?
Context: Yoshinori Kanada (金田 伊功 , Kanada Yoshinori , February 5, 1952 – July 21, 2009) was an influential Japanese animator originally from Nara, Japan.  He is best known for his popular 1984 work "Birth", one of the first original video animations released in the market.  Though he did not create many character designs, he was famous for his character animation skills.  His work on "Galaxy Express 999" (1979) and "Harmagedon" (1983) were very influential to an entire generation of animators in Japan.  These two works also served as partial inspiration for Takashi Murakami's Superflat art movement.  During the 1980s and 1990s, he worked closely with director Hayao Miyazaki on several movies from "Nausicaä of the Valley of the Wind" to "Princess Mononoke".  He was also known for breaking down the directorial system in animation, allowing individual key animators to exert their own style into a particular work.  He died at the age of 57 of a heart attack on July 21, 2009.  His works inspired the art and works of animators such as Hiroyuki Imaishi, Pendleton Ward, Rebecca Sugar and Ian Jones-Quartey. Nausicaä of the Valley of the Wind (Japanese: 風の谷のナウシカ , Hepburn: Kaze no Tani no Naushika ) is a 1984 Japanese animated epic science-fiction fantasy film adapted and directed by Hayao Miyazaki, based on his 1982 manga of the same name.  Isao Takahata produced the film for Tokuma Shoten and Hakuhodo, with Topcraft animating.  Joe Hisaishi, in his first collaboration with Miyazaki, composed the film's score.  The film stars the voices of Sumi Shimamoto, Goro Naya, Yoji Matsuda, Yoshiko Sakakibara and Iemasa Kayumi. Topcraft (トップクラフト, also written "Top Craft") was a Japanese anime studio established in 1971 by former Toei Animation producer Toru Hara.  It was famous for doing animation for hand-drawn animation titles by Rankin/Bass and for the production of "Nausicaä of the Valley of the Wind" and "".  The studio went bankrupt and dissolved in June 15, 1985 essentially splitting the studio in half.  Hayao Miyazaki, Toshio Suzuki and Isao Takahata bought the studio when laying off most of its animation staff and changed its name to Studio Ghibli.  .  Topcraft's animators later formed another studio called Pacific Animation Corporation to continue to work with Rankin/Bass on shows like "ThunderCats" and "Silverhawks" but eventually joined Ghibli once the studio was bought out by Disney and became Walt Disney Animation Japan.  Some animators like Tsuguyuki Kubo went to work for other anime studios such as Studio Pierrot working on "Naruto" and "Bleach" for them.  In the end the buy out of Topcraft made the studio into the birth of Studio Ghibli.  Topcraft's founder Toru Hara became Studio Ghibli's first manager. Nausicaä ( ; Naushika (ナウシカ , ]) ) is a fictional character from Hayao Miyazaki's science fiction manga series "Nausicaä of the Valley of the Wind" and his anime film of the same name.  Her story is set in the future on a post-apocalyptic Earth, where Nausicaä is the princess of the Valley of the Wind, a minor kingdom.  She assumes the responsibilities of her ill father and succeeds him to the throne over the course of the story.  Fueled by her love for others and for life itself, Nausicaä studies the ecology of her world to understand the Sea of Corruption, a system of flora and fauna which came into being after the Seven Days of Fire. Nausicaä of the Valley of the Wind (Japanese: 風の谷のナウシカ , Hepburn: Kaze no Tani no Naushika , IPA: /nɑːuːskə/) is a manga by Japanese anime director Hayao Miyazaki that ran from 1982 to 1994.  It tells the story of Nausicaä, a princess of a small kingdom on a post-apocalyptic Earth with a bioengineered ecological system, who becomes involved in a war between kingdoms while an environmental disaster threatens humankind. Makiko Futaki (June 19, 1958 – May 13, 2016) was a Japanese animator best known for her work at Studio Ghibli for more than thirty years.  Futaki, who joined Studio Ghibli in 1981, worked on all of Hayao Miyazaki's animated feature films, beginning with "Nausicaä of the Valley of the Wind" in 1984.  Her best known Studio Ghibli's productions include "My Neighbor Totoro" (1988), "Princess Mononoke" (1997), "Spirited Away" (2001), which won an Academy Award for Best Animated Feature, and "Howl's Moving Castle" (2004).  Her last film credit was Hiromasa Yonebayashi's "When Marnie Was There" (2014), which is Studio Ghibli's final feature film to date. List of Nausicaä of the Valley of the Wind characters Kyoshinhei Tôkyô ni arawaru (巨神兵東京に現わる , lit.  "Giant God Warrior Appears in Tokyo") is a 2012 Japanese short fantasy monster action film directed by Shinji Higuchi and produced by Studio Ghibli.  The design of the film's giant creature was provided by Hayao Miyazaki, from his manga series "Nausicaä of the Valley of the Wind".  Featuring practical effects such as miniatures, the film is Studio Ghibli's first live-action production. Michiyo Yasuda (保田 道世 , Yasuda Michiyo , April 28, 1939 – October 5, 2016) was an animator and colour designer who worked for Toei Animation, A Production, Nippon Animation, Topcraft, and Studio Ghibli.  Her designs were used by directors such as Isao Takahata, Hayao Miyazaki and Mamoru Oshii.  During a career spanning five decades in the animation industry, she worked on animated feature films and short films for theatrical release, original video animation (OVA), promotional music videos, animated television series, documentaries and commercials.  Yasuda provided the colour designs for Miyazaki's Academy Award winning animated film "Spirited Away".  She officially retired after working on "Ponyo" in 2008, but worked on the Academy Award nominated animated feature "The Wind Rises", released in July 2013. Nausicaa.net is an English-language fan website established in 1996 to contain information discussed on the Miyazaki Mailing List and to be a general resource for information regarding Hayao Miyazaki, Isao Takahata, Studio Ghibli, and related topics.  It is named after one of Miyazaki's films, "Nausicaä of the Valley of the Wind".
Answer: 1971