Question: The computer animation film studio that made the film Ratatouille became a corporation in what year?

Context paragraphs:
Shanghai Hippo Animation: Shanghai Hippo Animation Co., Ltd. () is the largest computer animation film studio in China.  Founded in Shanghai in 2003, Hippo Animation specializes in the creation of original content, as well as software development and the development of CG animation technologies.

Magnus Jansson: Magnus Jansson is a Swedish award-winning writer, director, artist, animator, and musician who is the co-founder and CEO of The Nuttery Entertainment, a digital-first and fan-centric studio based in Karlstad, Sweden and with offices in Stockholm and Los Angeles.  Prior to starting up The Nuttery Entertainment, Magnus was the co-founder and CEO of Assorted Nuts Animation Studios, a computer animation film studio based in Karlstad, Sweden and also its subsidiary division in the USA, Assorted Nuts Entertainment.  He attended Karlstad University from where he qualified with a bachelor's degree in Media and Communication Science and a bachelor's degree in Information Systems.

Triggerfish Animation Studios: Triggerfish Animation Studios, or simply Triggerfish, is a computer animation film studio based in Cape Town, South Africa.  The studio is best known for its animated feature films "Adventures in Zambezia" (2012), "Khumba" (2013), and a television special, titled "Stick Man" (for Magic Light Pictures, 2015).  In 2016, "Stick Man" was awarded the Cristal for best TV production at the Annecy International Animation Festival.  In 2017, their collaboration on "Revolting Rhymes" again won the Cristal for best TV production at the Annecy Festival.

Blue Sky Studios: Blue Sky Studios is an American computer animation film studio based in Greenwich, Connecticut that has been owned by 20th Century Fox since 1997.  The studio was founded in 1987 by Chris Wedge, Michael Ferraro, Carl Ludwig, Alison Brown, David Brown, and Eugene Troubetzkoy after the company they worked in, MAGI, one of the visual effects studios behind "Tron" (1982), shut down.  Using its in-house rendering software, the studio had worked on visual effects for commercials and films before completely dedicating itself to animated film production in 2002 with the release of "Ice Age".

Ferenc Mikulás: Ferenc Mikulás (17 August 1940, Dunapataj) is a figure in the Hungarian animation film culture.  He is the founder and director of the animation film studio Kecskemétfilm Kft., and the director of Kecskemét Animation Film Festival (KAFF).

Pixar: Pixar ( ), also referred to as Pixar Animation Studios, is an American computer animation film studio based in Emeryville, California that is a subsidiary of The Walt Disney Company.  Pixar began in 1979 as the Graphics Group, part of the Lucasfilm computer division, before its spin-out as a corporation in 1986, with funding by Apple Inc. co-founder Steve Jobs, who became the majority shareholder.  Disney purchased Pixar in 2006 at a valuation of $7.4 billion, a transaction that resulted in Jobs becoming Disney's largest single shareholder at the time.  Pixar is best known for CGI-animated feature films created with RenderMan, Pixar's own implementation of the industry-standard RenderMan image-rendering application programming interface, used to generate high-quality images.

Shanghai Animation Film Studio: Shanghai Animation Film Studio () also known as SAFS () is a part of the Shanghai Film Group Corporation.  Founded in April 1957 in Shanghai, it is one of the oldest animation studios in China.  It has produced around 500 films with over 40,000 minutes of original animation data source, covering 80% of China's domestic animation production.  It has the title of "the most valuable repository of animation in China".  It was probably the only animation studio in Chairman Mao's China and produced numerous classic animated films that are still popular today.

Ratatouille (video game): Ratatouille is a video game based on the Pixar film of the same name.  It was developed at Heavy Iron Studios and released by THQ, on June 26, 2007.  "Ratatouille" was released on thirteen systems—Wii, Nintendo DS, PlayStation 3, PlayStation 2, PSP, Xbox 360, Xbox, Nintendo GameCube, Game Boy Advance, Microsoft Windows, OS X, J2ME, and mobile phone.

Computer animation: Computer animation is the process used for generating animated images.  The more general term computer-generated imagery (CGI) encompasses both static scenes and dynamic images, while computer animation "only" refers to the moving images.  Modern computer animation usually uses 3D computer graphics, although 2D computer graphics are still used for stylistic, low bandwidth, and faster real-time renderings. Sometimes, the target of the animation is the computer itself, but sometimes film as well.

Keith Waters: Keith Waters (born 1962 in Kent, England) is a British animator who is best known for his work in the field of computer facial animation.  He has received international awards from Parigraph, the National Computer Graphics Association and the Computer Animation Film Festival.

Supporting paragraphs: Ratatouille (video game) Pixar
Answer: 1986