Question: Who is American, Robert Benton or Shinya Tsukamoto?

Context paragraphs:
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).

Bullet Ballet: Bullet Ballet (バレット・バレエ ) is a 1998 Japanese film directed by and starring Shinya Tsukamoto, and co-starring Hisashi Igawa, Sujin Kim, Kirina Mano, Takahiro Murase, Tatsuya Nakamura and Kyoka Suzuki.  After his girlfriend commits suicide, a man (Shinya Tsukamoto) becomes embroiled in gang warfare attempting to obtain a gun in hopes to kill himself.

Tetsuo: The Iron Man: Tetsuo: The Iron Man (鉄男 , Tetsuo ) is a 1989 Japanese cyberpunk horror film written, produced, edited, and directed by cult-film director Shinya Tsukamoto, and produced by Japan Home Video.  It is shot in the same low-budget, underground-production style as his first two films.  "Tetsuo" established Tsukamoto internationally and created his worldwide cult following.  It was followed by "" (1992) and "" (2009).

Der Eisenrost: Der Eisenrost (literally 'The Iron Rust') is one of the premier industrial "Metal Percussion" units in Tokyo, Japan.  They are best known for producing the film soundtrack for Shinya Tsukamoto's "Tokyo Fist".  Lead man and innovator Chu Ishikawa is notable for the futuristic, often industrial soundtracks for independent film creator Shinya Tsukamoto.  Films such as "", "Bullet Ballet", and "Gemini" rank among the best known.  Many of the members are also involved in the band C.H.C. System.

Tokyo Fist: Tokyo Fist (東京フィスト , "ＴＯＫＹＯ　ＦＩＳＴ" ) is a 1995 Japanese film.  It was directed by Shinya Tsukamoto, who also stars in the film along with his brother Kôji Tsukamoto and Kahori Fujii.  The film had its premier in September 1995 at the Turin Film Festival in Italy.

Shinya Tsukamoto: Shinya Tsukamoto (塚本 晋也 , Tsukamoto Shin'ya , born January 1, 1960) is a Japanese film director and actor with a considerable cult following both domestically and abroad, best known for the body horror/cyberpunk films "" (1989) and "" (1992).  Other films of his include "Tokyo Fist" (1995), "Bullet Ballet" (1998) and "A Snake of June" (2002).

Kotoko (film): Kotoko ("KOTOKO") is a 2011 Japanese film by cult director Shinya Tsukamoto.  It is based on an original story by J-pop artist Cocco, who stars in the film alongside Tsukamoto.

Gemini (1999 film): Gemini (also known as Sōseiji; 双生児 ) is a 1999 horror film by Shinya Tsukamoto, loosely based on an Edogawa Ranpo story, which pursues his theme of the brutally physical and animalistic side of human beings rearing its ugly head underneath a civilized veneer, present in previous films like "" (1989) and "Tokyo Fist" (1995), in what is a new territory for Tsukamoto—a story set in the late Meiji era (1868–1912) with no stop-motion photography and no industrial setting.

Nightmare Detective: Nightmare Detective (悪夢探偵 , Akumu Tantei ) is a 2006 Japanese horror film directed by Shinya Tsukamoto and released by Movie-Eye Entertainment Inc, starring Ryuhei Matsuda and hitomi.  Masanobu Ando and Ren Osugi play supporting roles, and Tsukamoto himself plays the unnamed villain.  The film is shot entirely within Adachi, Tokyo.

Haze (2005 film): Haze (ＨＡＺＥ ヘイズ ) is a 2005 Japanese thriller/horror film written and directed by Shinya Tsukamoto who also stars in the movie.  After appearances at several international festivals in 2005, the film debuted theatrically in Japan on March 4, 2006.  Two versions of the film exist: the original release, a short 25 minute version; and what Director Tsukamoto entitled the "Long Version", which runs 49 minutes.

Supporting paragraphs: Robert Benton Shinya Tsukamoto
Answer: Robert Douglas Benton