Question: Which company owns the company through which the TCM Vault Collection was released?

full_context: Document 1: The Rank Organisation: In 1995, the Rank Group acquired all the outstanding shares of the Rank Organisation. In spring 1997, Rank sold Rank Film Distributors, including its library of 749 films, to Carlton Television for £65 million and immediately became known as Carlton/RFD Ltd. Pinewood Studios and Odeon Cinemas were both sold off in 2000. The company finally severed its remainings connection with the film industry in 2005 when it sold its DVD distribution business and Deluxe technical support unit.
Document 2: Little Box of Horrors: The box set contains all four full-length releases by the band, all with their original artwork (American version). It also contains a fifth disc, entitled "Rare Treats", which features demo versions of many songs, as well as other rare songs by the band. The American release is accompanied by a DVD, entitled "The Transvestite Chainsaw Massacre: Live '98", which features footage of 9 songs performed live at Ground Zero, in Spartanburg, South Carolina, in 1998.
Document 3: Turner Classic Movies: In October 2015, TCM announced the launch of the TCM Wineclub, in which they teamed up with Laithwaite to provide a line of mail-order wines from famous vineyards such as famed writer-director-producer Francis Ford Coppola's winery. Wines are available in 3 month subscriptions, and can be selected as reds, whites, or a mixture of both. From the wines chosen, TCM also includes recommended movies to watch with each, such as a "True Grit" wine, to be paired with the John Wayne film of the same name.
Document 4: LaserDisc: Although the LaserDisc format was supplanted by DVD by the late 1990s, many LD titles are still highly coveted by movie enthusiasts (for example, Disney's Song of the South which is unavailable in the US in any format, but was issued in Japan on LD). This is largely because there are many films that are still only available on LD and many other LD releases contain supplemental material not available on subsequent DVD versions of those films. Until the end of 2001, many titles were released on VHS, LD, and DVD in Japan.
Document 5: Turner Classic Movies: In 1986, eight years before the launch of Turner Classic Movies, Ted Turner acquired the Metro-Goldwyn-Mayer film studio for $1.5 billion. Concerns over Turner Entertainment's corporate debt load resulted in Turner selling the studio that October back to Kirk Kerkorian, from whom Turner had purchased the studio less than a year before. As part of the deal, Turner Entertainment retained ownership of MGM's library of films released up to May 9, 1986. Turner Broadcasting System was split into two companies; Turner Broadcasting System and Metro-Goldwyn-Mayer and reincorporated as MGM/UA Communications Co.
Document 6: Universal Pictures: Anxious to expand the company's broadcast and cable presence, longtime MCA head Lew Wasserman sought a rich partner. He located Japanese electronics manufacturer Matsushita Electric (now known as Panasonic), which agreed to acquire MCA for $6.6 billion in 1990. Meanwhile, around this time, the production subsidiary was renamed Universal Studios Inc., and (in 1990) MCA created MCA/Universal Home Video Inc. for the VHS video cassette (later DVD) sales industry.
Document 7: LaserDisc: There were no anamorphic LaserDisc titles available in the US except for promotional purposes. Upon purchase of a Toshiba 16:9 television viewers had the option of selecting a number of Warner Bros. 16:9 films. Titles include Unforgiven, Grumpy Old Men, The Fugitive, and Free Willy. The Japanese lineup of titles was different. A series of releases under the banner "SQUEEZE LD" from Pioneer of mostly Carolco titles included Basic Instinct, Stargate, Terminator 2: Judgment Day, Showgirls, Cutthroat Island, and Cliffhanger. Terminator 2 was released twice in Squeeze LD, the second release being THX certified and a notable improvement over the first.
Document 8: NOS Audiovisuais: It was founded with the purpose of movie distribution, and had a very close relation with the biggest studios (it is currently the Portuguese licensee of United International Pictures, Walt Disney Studios Home Entertainment, Warner Home Video, Miramax Films, DreamWorks SKG, Warner Bros. Pictures (1923-2006, 2014–present) and Paramount Pictures Home Entertainment). In the 1980s Lusomundo started acquiring newspapers, including "Comércio do Porto", "Diário de Notícias" and "Jornal de Notícias". In the early 1990s, it acquired TSF Rádio Notícias and minority stakes of TVI.
Document 9: Newsreel: Created in 1911 by Charles Pathé, this form of film was a staple of the typical North American, British, and Commonwealth countries (especially Canada, Australia, and New Zealand), and throughout European cinema programming schedule from the silent era until the 1960s when television news broadcasting completely supplanted its role. The National Film and Sound Archive in Australia holds the Cinesound Movietone Australian Newsreel Collection, a comprehensive collection of 4,000 newsreel films and documentaries representing news stories covering all major events.
Document 10: Turner Classic Movies: TCM's film content has remained mostly uncut and uncolorized (with films natively filmed or post-produced in the format being those only ones presented in color), depending upon the original content of movies, particularly movies released after the 1968 implementation of the Motion Picture Association of America's ratings system and the concurrent disestablishment of the Motion Picture Production Code. Because of this, TCM is formatted similarly to a premium channel with certain films – particularly those made from the 1960s onward – sometimes featuring nudity, sexual content, violence and/or strong profanity; the network also features rating bumpers prior to the start of a program (most programs on TCM, especially films, are rated for content using the TV Parental Guidelines, in lieu of the MPAA's rating system).
Document 11: Universal Pictures: Universal Studios Inc. (also known as Universal Pictures) is an American film studio, owned by Comcast through its wholly owned subsidiary NBCUniversal, and is one of Hollywood's "Big Six" film studios. Its production studios are at 100 Universal City Plaza Drive in Universal City, California. Distribution and other corporate offices are in New York City. Universal Studios is a member of the Motion Picture Association of America (MPAA). Universal was founded in 1912 by the German Carl Laemmle (pronounced "LEM-lee"), Mark Dintenfass, Charles O. Baumann, Adam Kessel, Pat Powers, William Swanson, David Horsley, Robert H. Cochrane, and Jules Brulatour.
Document 12: National Archives and Records Administration: In July 2007, the National Archives announced it would make its collection of Universal Newsreels from 1929 to 1967 available for purchase through CreateSpace, an Amazon.com subsidiary. During the announcement, Weinstein noted that the agreement would "... reap major benefits for the public-at-large and for the National Archives." Adding, "While the public can come to our College Park, MD research room to view films and even copy them at no charge, this new program will make our holdings much more accessible to millions of people who cannot travel to the Washington, DC area." The agreement also calls for CreateSpace partnership to provide the National Archives with digital reference and preservation copies of the films as part of NARA's preservation program.
Document 13: Southern California: The motion picture, television, and music industry is centered on the Los Angeles in southern California. Hollywood, a district within Los Angeles, is also a name associated with the motion picture industry. Headquartered in southern California are The Walt Disney Company (which also owns ABC), Sony Pictures, Universal, MGM, Paramount Pictures, 20th Century Fox, and Warner Brothers. Universal, Warner Brothers, and Sony also run major record companies as well.
Document 14: Turner Classic Movies: The TCM Vault Collection consists of several different DVD collections of rare classic films that have been licensed, remastered and released by Turner Classic Movies (through corporate sister Warner Home Video). These boxed set releases are of films by notable actors, directors or studios that were previously unreleased on DVD or VHS. The sets often include bonus discs including documentaries and shorts from the TCM library. The initial batch of DVDs are printed in limited quantities and subsequent batches are made-on-demand (MOD).
Document 15: Turner Classic Movies: Most Paramount sound releases made prior to 1950 are owned by EMKA, Ltd./NBCUniversal Television Distribution, while Paramount (currently owned by Viacom) holds on to most of its post-1949 releases, which are distributed for television by Trifecta Entertainment & Media. Columbia's film output is owned by Sony (through Sony Pictures Television); distribution of 20th Century Fox's film library is handled for television by its 21st Century Fox subsidiary 20th Television, and the Walt Disney Studios (owned by The Walt Disney Company) has its library film output handled for television by Disney-ABC Domestic Television. Classic films released by 20th Century Fox, Paramount Pictures, Universal Studios, and Columbia Pictures are licensed individually for broadcast on Turner Classic Movies.
ground_truth: Warner Bros.
sub_queries: Through what company is the TCM Vault Collection released? Answer: Warner Home Video
Warner Home Video >> owned by Answer: Warner Bros.