Question: Which film director won an oscar Dziga Vertov or Robert Benton?

full_context: Document 1: Robert Benton: Robert Douglas Benton (born September 29, 1932) is an American screenwriter and film director. He won the Oscars for Best Adapted Screenplay and Best Director for "Kramer vs. Kramer" (1979) and won a third Oscar for Best Original Screenplay for "Places in the Heart" (1984).
Document 2: A Sixth Part of the World: A Sixth Part of the World (Russian: Шестая часть мира , Shestaya Chast Mira ), sometimes referred to as The Sixth Part of the World, is a 1926 silent film directed by Dziga Vertov and produced by Kultkino (part of Sovkino). Through the travelogue format, it depicted the multitude of Soviet peoples in remote areas of USSR and detailed the entirety of the wealth of the Soviet land. Focusing on cultural and economic diversity, the film is in fact a call for unification in order to build a "complete socialist society". A mix between newsreel and found footage, Vertov edited sequences filmed by eight teams of kinoks ("kinoki") during their trips. According to Vertov, the film anticipates the coming of sound films by using a constant ""word-radio-theme"" in the intertitles. Thanks to "A Sixth Part of the World" and his following feature "The Eleventh Year" (1928), Vertov matures his style in which he will excel in his most famous film "Man with a Movie Camera" (1929).
Document 3: Kino-Eye: Kino-Eye (Anglophonic: Cine-Eye) is a film technique developed in Soviet Russia by Dziga Vertov. It was also the name of the movement and group that was defined by this technique. Kino-Eye was Vertov's means of capturing what he believed to be "inaccessible to the human eye"; that is, Kino-Eye films would not attempt to imitate how the human eye saw things. Rather, by assembling film fragments and editing them together in a form of montage, Kino-Eye hoped to activate a new type of perception by creating "a new filmic, i.e., media shaped, reality and a message or an illusion of a message - a semantic field." Distinct from narrative entertainment cinema forms or otherwise "acted" films, Kino-Eye sought to capture "life unawares" and edit it together in such a way that it would form a new, previously unseen truth.
Document 4: Bob Clark: Benjamin "Bob" Clark (August 5, 1939 – April 4, 2007) was an American actor, director, screenwriter and producer best known for directing and writing the script with Jean Shepherd to the 1983 Christmas film "A Christmas Story". Although he worked primarily in the United States, from 1973 to 1983 he worked in Canada and was responsible for some of the most successful films in Canadian film history such as "Black Christmas" (1974), "Murder by Decree" (1979), "Tribute" (1980), and "Porky's" (1982).
Document 5: Robert Wise: Robert Earl Wise (September 10, 1914 – September 14, 2005) was an American film director, producer and editor. He won Academy Awards for Best Director and Best Picture for both "West Side Story" (1961) and "The Sound of Music" (1965). He was also nominated for Best Film Editing for "Citizen Kane" (1941) and directed and produced "The Sand Pebbles" (1966), which was nominated for Best Picture.
Document 6: Cinema of Ukraine: Ukraine has had an influence on the history of the cinema. Prominent Ukrainian directors include Oleksandr Dovzhenko, Dzyha Vertov and Serhiy Paradzhanov. Dovzhenko is often cited as one of the most important early Soviet filmmakers, as well as being a pioneer of Soviet montage theory and founding Dovzhenko Film Studios. In 1927 Dziga Vertov moved from Moscow to Ukraine. At the film studio VUFKU he made several avant-garde documentaries, among them «The Eleventh Year», «Man with a Movie Camera» and first Ukrainian documentary sound film «Enthusiasm (Symphony of the Donbass)». Paradzhanov was an Armenian film director and artist who made significant contributions to Ukrainian, Armenian and Georgian cinema; he invented his own cinematic style, Ukrainian poetic cinema, which was totally out of step with the guiding principles of socialist realism.
Document 7: Robert Zemeckis: Robert Lee Zemeckis (born May 14, 1952) is an American filmmaker and screenwriter frequently credited as an innovator in visual effects. Credited as "one of the greatest visual storytellers in filmmaking", he first came to public attention in the 1980s as the director of "Romancing the Stone" (1984) and the science-fiction comedy "Back to the Future" film trilogy, as well as the live-action/animated comedy "Who Framed Roger Rabbit" (1988). In the 1990s he diversified into more dramatic fare, including 1994's "Forrest Gump", for which he won an Academy Award for Best Director. The film itself won Best Picture. The movies he has directed have ranged across a wide variety of genres, for both adults and families.
Document 8: Cinéma vérité: Cinéma vérité ( ; ] ; "truthful cinema") is a style of documentary filmmaking, invented by Jean Rouch, inspired by Dziga Vertov's theory about Kino-Pravda and influenced by Robert Flaherty’s films. It combines improvisation with the use of the camera to unveil truth or highlight subjects hidden behind crude reality.
Document 9: Kinoks: The Kinoks ("kino-oki," meaning cinema-eyes) were a collective of Soviet filmmakers in 1920s Russia, based most notably around film editor Dziga Vertov (pseudonym Denis Kaufman). In 1919 Vertov and his future wife, the talented film editor Elizaveta Svilova, plus several other young filmmakers created a group called Kinoks ("kino-oki," meaning cinema-eyes). In 1922 they were joined by Mikhail Kaufman, who had just returned from the civil war. From 1922 to 1923 Vertov, Kaufman, and Svilova published a number of manifestos in avant-garde journals which clarified the Kinoks' positions vis-à-vis other leftist groups.
Document 10: Robert Duvall: Robert Selden Duvall ( ; born January 5, 1931) is an American actor and filmmaker. He has been nominated for seven Academy Awards (winning for his performance in "Tender Mercies"), seven Golden Globes (winning four), and has multiple nominations and one win each of the BAFTA, Screen Actors Guild Award, and Emmy Award. He received the National Medal of Arts in 2005. Duvall has starred in numerous films and television series, including "To Kill a Mockingbird" (1962), "The Twilight Zone" (1963), "The Outer Limits" (1964), "Bullitt" (1968), "True Grit" (1969), "MASH" (1970), "THX 1138" (1971), "Joe Kidd" (1972), "The Godfather" (1972), "The Godfather Part II" (1974), "The Conversation" (1974), "Network" (1976), "Apocalypse Now" (1979), "The Great Santini" (1979), "Lonesome Dove" (1989), "The Handmaid's Tale" (1990), "Rambling Rose" (1991), and "Falling Down" (1993).
Document 11: Robert Altman: Robert Bernard Altman ( ; February 20, 1925 – November 20, 2006) was an American film director, screenwriter, and film producer. A five-time nominee of the Academy Award for Best Director and an enduring figure from the New Hollywood era, Altman was considered a "maverick" in making films with a highly naturalistic but stylized and satirical aesthetic, unlike most Hollywood films. He is consistently ranked as one of the greatest and most influential filmmakers in American cinema.
Document 12: Lev Kuleshov: Lev Vladimirovich Kuleshov (Russian: Лев Влади́мирович Кулешо́в ; 13 January [O.S. 1 January] 1899 – 29 March 1970) was a Russian and Soviet filmmaker and film theorist, one of the founders of the world's first film school, the Moscow Film School. He was given the title People's Artist of the RSFSR in 1969. He was intimately involved in development of the style of film making known as Soviet montage, especially it's psychological underpinning, including the use of editing and the cut to emotionally influence the audience, a principle known as the Kuleshov effect. He also developed the theory of creative geography, which is the use of the action around a cut to connect otherwise disparate settings into a cohesive narrative.
Document 13: Dziga Vertov: Dziga Vertov (Russian: Дзига Вертов ; born David Abelevich Kaufman, Russian: Дави́д А́белевич Ка́уфман , and also known as Denis Kaufman; 2 January 1896 – 12 February 1954) was a Soviet pioneer documentary film and newsreel director, as well as a cinema theorist. His filming practices and theories influenced the cinéma vérité style of documentary movie-making and the Dziga Vertov Group, a radical film-making cooperative which was active from 1968 to 1972.
Document 14: Dziga Vertov Group: The Dziga Vertov Group (French: "Groupe Dziga Vertov" ) was formed in 1968 by politically active filmmakers including Jean-Luc Godard and Jean-Pierre Gorin. Their films are defined primarily for Brechtian forms, Marxist ideology, and a lack of personal authorship. The group, named after 1920s-'30s Soviet filmmaker Dziga Vertov (1896-1954), was dissolved soon after the completion of 1972's "Letter to Jane".
Document 15: Places in the Heart: Places in the Heart is a 1984 American drama film written and directed by Robert Benton about a U.S. Depression-era Texas widow who tries to save the family farm with the help of a blind white man and a poor black man. The film stars Sally Field, Lindsay Crouse, Ed Harris, Ray Baker, Amy Madigan, John Malkovich, Danny Glover, Jerry Haynes and Terry O'Quinn. It was filmed in Waxahachie, Texas. Field won the Academy Award for Best Actress for her performance.
ground_truth: Robert Douglas Benton