Question: Stan Brakhage and Frank Powell are known for what kind of films?

full_context: Document 1: Frank Powell: Frank E. Powell was a stage and silent film actor, screenwriter, and director in the United States. He was born in Hamilton, Ontario, Canada.
Document 2: Jane Wodening: Jane Wodening (born Mary Jane Collom, and formerly known as Jane Brakhage) is an American writer and the first wife of filmmaker Stan Brakhage. The birth of their first child is the subject of the 1959 experimental short film "Window Water Baby Moving". Wodening married Stan Brakhage in 1957 and is credited with creating scrapbooks for the Brakhage family during what is recognized as the filmmaker's most significant period of creation from the late 1950s to the mid 1960s. The couple separated in 1987.
Document 3: Cat's Cradle (film): Cat's Cradle is an experimental short film by Stan Brakhage, produced in 1959. The film was described by Brakhage as "sexual witchcraft involving two couples and a 'medium' cat."
Document 4: Stan Brakhage filmography: Over the course of more than five decades, the American experimental filmmaker Stan Brakhage produced a large body of work. All films in the filmography are assumed to be silent, in color, and are meant to be shown at 24 frames per second, unless otherwise noted. The Brakhage films, comprising his edited originals, intermediate elements, and other original material, are housed at the Academy of Motion Picture Arts and Sciences Film Archive, where a long-term project is underway to preserve and restore his entire film output.
Document 5: Window Water Baby Moving: Window Water Baby Moving is an experimental short film by Stan Brakhage, filmed in November 1958 and released in 1959. The film documents the birth of the director's first child, Myrrena, by his then-wife Jane Brakhage, now Jane Wodening.
Document 6: John F. Hamilton: John F. Hamilton (7 November 1893 – 11 July 1967) was an American-born actor who worked for many years in the theatre but only occasionally on film. He was known as John F. Hamilton to distinguish him from the much more prolific American film actor John Hamilton and from a British actor of youthful roles who worked in England and Europe in the 1930s
Document 7: Francis Mankiewicz: Francis Mankiewicz (March 15, 1944 in Shanghai, China – August 14, 1993 in Montreal, Quebec, Canada) was a Canadian film director, screenwriter and producer. In 1945, his family moved to Montreal, where Francis spent all his childhood. His father was a second cousin to the famous Hollywood brothers, Joseph L. Mankiewicz and Herman J. Mankiewicz.
Document 8: Frank Daniel: František "Frank" Daniel (April 14, 1926 – March 29, 1996) was a film director, producer and screenwriter born in Kolín, Czechoslovakia (the present day Czech Republic). He is known for developing the sequence paradigm of screenwriting.
Document 9: Interim (film): Interim is a 1953 American short film drama directed by Stan Brakhage. It was the first film directed by Stan Brakhage, whose expansive filmography has made him an influential figure in experimental film.
Document 10: Arabic Numeral Series: The Arabic Numeral Series, sometimes referred to as the Arabics, is a series of 19 short 16mm films completed by the American experimental filmmaker Stan Brakhage in 1981 and 1982. The "Arabic Numeral Series" gets its name from the fact that none of the films included in it have titles, instead opening with an arabic numeral. Brakhage produced another cycle, the "Roman Numeral Series", whose films all have Roman numerals instead of titles, around the same time. All of the "Arabics" are silent and are intended to be projected at 18 frames per second.
Document 11: Stan Brakhage: James Stanley Brakhage ( ; January 14, 1933 – March 9, 2003), better known as Stan Brakhage, was an American non-narrative filmmaker. He is considered to be one of the most important figures in 20th-century experimental film.
Document 12: Frank Harvey (Australian screenwriter): Frank Harvey (22 December 1885 – 10 October 1965) was a British-born actor, producer and writer best known for his work in Australia.
Document 13: Songs (Stan Brakhage cycle): The Songs are a cycle of silent color 8mm films by the American experimental filmmaker Stan Brakhage produced from 1964 to 1969. They are seen as one of Brakhage's major works and include the feature-length "23rd Psalm Branch", considered by some to be one of the filmmaker's masterworks and described by film historian P. Adams Sitney as "an apocalypse of imagination." One of the filmmaker's most overtly political films, "23rd Psalm Branch" is often interpreted as being Brakhage's reaction to the Vietnam War.
Document 14: Frank Capra: Frank Russell Capra (born Francesco Rosario Capra; May 18, 1897September 3, 1991) was an Italian-American film director, producer and writer who became the creative force behind some of the major award-winning films of the 1930s and 1940s. Born in Italy and raised in Los Angeles from the age of five, his rags-to-riches story has led film historians such as Ian Freer to consider him the "American dream personified."
Document 15: Powell and Pressburger: The British film-making partnership of Michael Powell (1905–1990) and Emeric Pressburger (1902–1988)—together often known as The Archers, the name of their production company—made a series of influential films in the 1940s and 1950s. —24 films between 1939 and 1972—were mainly derived from original stories by Pressburger with the script written by both Pressburger & Powell. Powell did most of the directing while Pressburger did most of the work of the producer and also assisted with the editing, especially the way the music was used. Unusually, the pair shared a writer-director-producer credit for most of their films. The best known of these are "The Life and Death of Colonel Blimp" (1943), "A Canterbury Tale" (1944), "A Matter of Life and Death" (1946), "Black Narcissus" (1947), "The Red Shoes" (1948), and "The Tales of Hoffmann" (1951).
ground_truth: silent film