Question: Seven Days is directed by whom

full_context: Document 1: Night of 7 Years: Night of 7 Years is an upcoming South Korean thriller film directed by Choo Chang-min. It is based on Jung Yoo-jung's novel of the same name.
Document 2: Won Shin-yun: Won Shin-yun (born October, 1969) is a South Korean film director. Won has the unique background of having been a stuntman before making his directorial horror film debut "The Wig" (2005). Since then, he has shown strong talent in action thriller movies through "A Bloody Aria" (2006), "Seven Days" (2007) and "The Suspect" (2013). "The Suspect" was a box office hit with over 4.1 million admissions.
Document 3: Ryu Seung-ryong: Ryu Seung-ryong (born November 29, 1970) is a South Korean actor. Ryu began his acting career in theater, subsequently becoming one of the most versatile supporting actors in Korean film and television. In 2013, he headlined "Miracle in Cell No. 7", which became (at the time) the third highest grossing Korean film of all time.
Document 4: Kim Yoon-seok: Kim Yoon-seok (born January 21, 1968) is a South Korean actor. Kim's theater background first led him to be cast in minor roles on film and television. His breakout role came as the villain in gambling film "" (2006), but it was his performance as an ex-cop turned pimp in surprise hit "The Chaser" (2008) that brought him acting awards and stardom in his forties. Kim has since become an acclaimed leading actor, along with Choi Min-sik, Song Kang-ho, Sol Kyung-gu, Hwang Jung-min, Ha Jung-woo, in terms of acting talent and box office guarantee in Korean cinema, in films such as "Running Turtle" (2009), "The Yellow Sea" (2010), "Punch" (2011),"The Thieves" (2012), "" (2013), "Sea Fog" (2014), "The Classified File" (2015) and "The Priests" (2015).
Document 5: Miracle in Cell No. 7: Miracle in Cell No. 7 (; lit. "A Gift from Room 7") is a 2013 South Korean film starring Ryu Seung-ryong, Kal So-won and Park Shin-hye. The film is a heartwarming comedy and family melodrama about a mentally challenged man wrongfully imprisoned for murder, who builds friendships with the hardened criminals in his cell, and in return they help him see his daughter again by smuggling her into the prison.
Document 6: Seven Days (film): Seven Days () is a 2007 South Korean crime thriller film directed by Won Shin-yun, starring Yunjin Kim and Park Hee-soon.
Document 7: Yunjin Kim: Yunjin Kim (born November 7, 1973) is a South Korean-born American film and theater actress. She is best known for her role as Sun on the American television series "Lost", and as the North Korean spy Bang-Hee in the South Korean film "Shiri". She also starred as Dr. Karen Kim in the ABC drama series "Mistresses".
Document 8: Jeon Do-yeon: Jeon Do-yeon (born February 11, 1973) is a South Korean actress. She has won many awards in her career, including best actress at the 2007 Cannes Film Festival for her portrayal of a broken woman who has lost everything in Lee Chang-dong's "Secret Sunshine".
Document 9: Im Won-hee: Im Won-hee (born Seoul, October 11, 1970) is a South Korean actor. Im was an alumnus of the legendary Daehak-ro theater troupe "Mokhwa" (), starring in many of Jang Jin's stage plays. He made his film debut in Jang's black comedy "The Happenings" in 1998, and through the years has become one of the most versatile supporting actors in Korean cinema, with notable roles in "Three... Extremes" and "Le Grand Chef". But Im is best known for his iconic role Dachimawa Lee, which began in 2000 as the title character of a 35-minute short film that director Ryoo Seung-wan made as a parody/homage to '70s Korean genre action films. The internet short was enormously popular and received more than a million page views, and in 2008, Ryoo again cast Im in an action-comedy feature film based on the same character, "Dachimawa Lee".
Document 10: Gong Yoo: Gong Ji-chul (; born July 10, 1979), better known by his stage name Gong Yoo (), is a South Korean actor. He is best known for his roles in television dramas "The 1st Shop of Coffee Prince" (2007) and "" (2016-2017), and the films "Silenced" (2011), "The Age of Shadows" (2016), and "Train to Busan" (2016).
Document 11: Park Si-hoo: Park Si-hoo (born Park Pyeong-ho on April 3, 1978) is a South Korean actor. He began his entertainment career as an underwear model and stage actor, then made his official television debut in 2005. After several years in supporting roles, Park rose to fame in 2010 with the popular romantic comedy series "Queen of Reversals" and "Prosecutor Princess". This was followed by leading roles in period drama "The Princess' Man" (2011) and thriller film "Confession of Murder" (2012).
Document 12: Park Hae-il: Park Hae-il (born January 26, 1977) is a South Korean actor. He began his acting career in theater, but soon gained the film industry's attention in 2003 with "Jealousy Is My Middle Name" and "Memories of Murder". Park's film career took off, with leading roles in films of diverse genres, including relationship drama "Rules of Dating" (2005), horror mystery "Paradise Murdered" (2007), and crime thriller "Moss" (2010). More recently, Park received Best Actor honors for his performance in the period action film "War of the Arrows", which was the highest-grossing Korean film of 2011. He also received critical acclaim for his role as an aging poet in "A Muse" (2012).
Document 13: Park Hee-soon: Park Hee-soon (born February 13, 1970) is a South Korean actor. He graduated with a Theater degree from Seoul Institute of the Arts, and was a member of the Mokwha Repertory Company from 1990 to 2001. He became active in film beginning 2002, and won several Best Supporting Actor awards for his portrayal of a tough cop in "Seven Days" (2007).
Document 14: 1987 (2017 film): 1987 is an upcoming South Korean political drama film directed by Jang Joon-hwan, starring Kim Yoon-seok, Ha Jung-woo, Yoo Hae-jin and Kim Tae-ri.
Document 15: Secret Sunshine: Secret Sunshine () is a 2007 South Korean drama film directed by acclaimed South Korean director, novelist, and former Minister of Culture Lee Chang-dong. The screenplay based on the short fiction "The Story of a Bug" by Lee Cheong-jun that focuses on a woman as she wrestles with the questions of grief, madness, and faith. The Korean title Miryang (or Milyang) is named after the city that served as the film's setting and filming location, of which "Secret Sunshine" is the literal translation. For her performance in the film, Jeon Do-yeon won the Prix d'interprétation féminine du Festival de Cannes (Best Actress) at the 2007 Cannes Film Festival. The film also won the award for Best Film at the Asian Film Awards and at the Asia Pacific Screen Awards. The film sold 1,710,364 tickets nationwide in South Korea alone.
ground_truth: Won Shin-yun