Question: In which prominent Pixar Animation Studios film did James Albert Varney Jr. provide voice acting?

Context paragraphs:
Toy Story: Toy Story is a 1995 American computer-animated buddy comedy adventure film produced by Pixar Animation Studios for Walt Disney Pictures.  The directorial debut of John Lasseter, "Toy Story" was the first feature-length computer-animated film and the first feature film produced by Pixar.  Taking place in a world where anthropomorphic toys pretend to be lifeless whenever humans are present, the film's plot focuses on the relationship between Woody, an old-fashioned pullstring cowboy doll (voiced by Tom Hanks), and Buzz Lightyear, an astronaut action figure (voiced by Tim Allen), as they evolve from rivals competing for the affections of Andy, their owner, to friends who work together to be reunited with Andy as his family prepares to move to a new home.  The screenplay was written by Joss Whedon, Andrew Stanton, Joel Cohen and Alec Sokolow, based on a story by Lasseter, Pete Docter, Stanton and Joe Ranft.  The film features music by Randy Newman, and was executive-produced by Steve Jobs and Edwin Catmull.

Jim Varney: James Albert Varney Jr. (June 15, 1949 – February 10, 2000) was an American actor, comedian and writer, best known for his role as Ernest P. Worrell, who was used in numerous television commercial advertising campaigns and movies, earning him fame worldwide and a Daytime Emmy Award.  He gained further notability for playing Jed Clampett in the movie version of "The Beverly Hillbillies" (1993) and providing the voice of Slinky Dog in "Toy Story" (1995) and "Toy Story 2" (1999).

Walt Disney Pictures: Walt Disney Pictures, Inc. is an American film production company and a subsidiary of Walt Disney Studios, owned by The Walt Disney Company.  The division is based at the Walt Disney Studios in Burbank, California, and is the main producer of live-action feature films within the Walt Disney Studios unit.  It took on its current name in 1983.  Today, in conjunction with the other units of Walt Disney Studios, Walt Disney Pictures is classified as one of Hollywood's "Big Six" film studios.  Films produced by Walt Disney Animation Studios and Pixar Animation Studios are also released under this brand.

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.

Osnat Shurer: Osnat Shurer is an animation producer, who was head of Pixar Animation Studios' short film output.  She was a consultant involved in developing original feature films in both animation and live-action, working in particular with Pixar's much-older sister company, Walt Disney Animation Studios as VP of development.  She is the Academy Award nominated producer of Disney's animated musical, "Moana".

Luxo Jr. (character): Luxo Jr. is a desk lamp character and the corporate mascot of Pixar Animation Studios.  Luxo Jr. is the protagonist of the short film of the same name and appears on the production logo of every Pixar film, hopping on screen and bouncing on the letter I. John Lasseter created Luxo Junior, modeling the character after his own Luxo brand lamp.  The manufacturer of Luxo lamps sued Disney, the parent company of Pixar, for selling Luxo Jr. branded merchandise in 2009.

Toy Story 3: Toy Story 3 is a 2010 American 3D computer-animated comedy-drama film produced by Pixar Animation Studios for Walt Disney Pictures.  It is the third installment in Pixar's "Toy Story" series, and the sequel to 1999's "Toy Story 2".  It was directed by Lee Unkrich, the editor of the first two films and the co-director of "Toy Story 2", written by Michael Arndt, while Unkrich wrote the story along with John Lasseter and Andrew Stanton, respectively director and co-writer of the first two films.  The plot focuses on the toys Woody, Buzz Lightyear, and their friends dealing with an uncertain future as their owner, Andy, prepares to leave for college.  The film features an ensemble voice cast with Tom Hanks, Tim Allen, Joan Cusack, Don Rickles, Wallace Shawn, John Ratzenberger, Estelle Harris, Jodi Benson, and John Morris reprising their roles from the previous films, along with Blake Clark as the voice of Slinky Dog (because Jim Varney died ten years before the release of the film) and Ned Beatty, Michael Keaton, Whoopi Goldberg, Timothy Dalton, Kristen Schaal, Bonnie Hunt, and Jeff Garlin voicing the new characters introduced in this film.

Surprise (1991 film): Surprise is a Pixar computer animated short created in 1991 by Pixar Animation Studios for "Sesame Street".  It starred Luxo Jr. from a previous Pixar short film.  The film's length in total is no more than 20 seconds, making this one of Pixar's shortest animated films.The soundtrack in "Surprise" is the same as that used in "Luxo Jr."

Joe Ranft: Joseph Henry Ranft (March 13, 1960 – August 16, 2005) was an American screenwriter, animator, storyboard artist, voice actor and magician who worked for Pixar Animation Studios and Disney at Walt Disney Animation Studios and Disney Television Animation.  His brother, Jerome Ranft, is a sculptor who also worked on several Pixar movies.

Walt Disney Studios Motion Pictures: Walt Disney Studios Motion Pictures (formerly Buena Vista Pictures Distribution and Buena Vista Film Distribution Company) is an American film distributor owned by The Walt Disney Company.  Established in 1953 as Buena Vista Film Distribution Company, the company handles theatrical distribution, marketing and promotion for films produced and released by the Walt Disney Studios, including Walt Disney Pictures, Walt Disney Animation Studios, Pixar Animation Studios, DisneyToon Studios, Marvel Studios, Lucasfilm, Disneynature, and Touchstone Pictures.  The division took on its current name in late 2007, which before that had been Buena Vista Pictures Distribution since 1987.

Supporting paragraphs: Jim Varney Toy Story
Answer: Toy Story