Question: Which director is of the Swiss nationality, Alain Tanner or Stan Brakhage?

Context paragraphs:
Unglassed Windows Cast a Terrible Reflection: Unglassed Windows Cast a Terrible Reflection is a 1953 American short film directed by Stan Brakhage, which was made at the beginning of his long career.  Shot while Brakhage's native Denver, the film stars Larry Jordan (credited as Lawrence Jordan) who later went on to become a film director.  Filming was done in Nevadaville, Colorado.  Like his other films at the time, it was shot on 16mm film, is black and white and features no dialogue.

Alain Tanner: Alain Tanner (born 6 December 1929) is a Swiss film director.

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.

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.

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.

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.

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."

Rolling Stock (newspaper): Rolling Stock was a newspaper of ideas and a chronicler of the 1980s published in Boulder, Colorado by Ed Dorn and Jennifer Dunbar Dorn.  The paper had a regional motif, but featured correspondents covering the world, including Woody Haut on Labor, John Daley on Law, Roger Echo-Hawk on Native American Affairs, Nick Sedgwick on Golf, Stan Brakhage on Film, Jane Brakhage on Lump Gulch, Dick Dillof in Montana, Lucía Berlin in California, Tom Raworth, London and Cambridge, Fielding Dawson, New York City; Jeremy Prynne, English Letters, Marilyn Krysl in China, James Inskeep, Southern Colorado, Tom Clark, Southern California, and Bob Lewis, Akron, Ohio and Abroad.

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.

Thigh Line Lyre Triangular: Thigh Line Lyre Triangular is an experimental short film by Stan Brakhage, released in 1961, which depicts the birth of the director's third child, Neowyn.  The film, which involves painting and hand-scratching over photographic images, is more abstract than the director's earlier "Window Water Baby Moving", which documented the birth of Brakhage's first-born, Myrrenna.

Supporting paragraphs: Alain Tanner Stan Brakhage
Answer: Alain Tanner