Question: Kim Sang-kyung (born June 1, 1972) is a South Korean actor, he's  best known for his leading roles in which South Korean film, released in 2007?

full_context: Document 1: 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.
Document 2: Bong Joon-ho: Bong Joon Ho (, ] ; born September 14, 1969) is a South Korean film director and screenwriter. His films include South Korean hits "Memories of Murder" (2003), based on a true-life serial murder case, monster movie "The Host" (2006), and his first English-language film, science fiction adventure "Snowpiercer" (2013). His latest film is "Okja" (2017), a South Korean-American film, which competed for the "Palme d'Or" in the main competition section at the 2017 Cannes Film Festival. "Okja" was subsequently released by Netflix on June 28, 2017.
Document 3: 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 4: 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 5: May 18 (film): May 18 (; lit. "Splendid Holiday") is a South Korean film released in 2007.
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: Lee Hwan-kyung: Lee Hwan-kyung (born 1970) is a South Korean film director and screenwriter. Lee debuted with "He Was Cool" (2004). His next two features, "Lump Sugar" (2006) revolves around Si-eun who dreams of becoming a jockey and "Champ" (2011), which is based on a true story, depicts the relationship between a recently injured racehorse and the jockey who is gradually losing his eyesight. His fourth feature "Miracle in Cell No. 7" (2013) became the biggest hit of the year with more than 12.32 million viewers.
Document 8: Kim Roi-ha: Kim Roi-ha (born November 15, 1965) is a South Korean actor. Notable roles include a detective in "Memories of Murder" (2003), and a gangster in "A Bittersweet Life" (2005).
Document 9: Kim Ki-duk: Kim Ki-duk ( ] ; born December 20, 1960) is a South Korean filmmaker noted for his idiosyncratic art-house cinematic works. His films have received many distinctions in the festival circuit, making him one of the most important contemporary Asian film directors. Major festival awards include Golden Lion at 69th Venice International Film Festival for "Pietà", Silver Lion for Best Director at 61st Venice International Film Festival for "3-Iron", Silver bear for Best Director at 54th Berlin International Film Festival for "Samaria" and Un Certain Regard prize at 2011 Cannes Film Festival for Arirang. His most widely known feature is "Spring, Summer, Fall, Winter... and Spring" (2003), included in film critic Roger Ebert's Great Movies. Two of his films served as official submissions for Academy award for best foreign language film as South Korean entries. He has given scripts to several of his former assistant directors including Juhn Jai-hong ("Beautiful" and "Poongsan") and Jang Hoon ("Rough Cut").
Document 10: The Mayor (2017 film): The Mayor (, lit. "Special Citizen") is a 2017 South Korean political drama film written and directed by Park In-je. It stars Choi Min-sik, Kwak Do-won, Shim Eun-kyung, Moon So-ri, Ra Mi-ran, Ryu Hye-young and Ki Hong Lee. The film was released in South Korea on April 26, 2017 and in the US and Canada on April 28.
Document 11: Shim Sung-bo: Shim Sung-bo (born 1972) is a South Korean film director and screenwriter. Shim became notable when he co-wrote "Memories of Murder" with director Bong Joon-ho in 2003. Besides winning numerous awards and being widely considered as one of the greatest Korean films of all time, "Memories of Murder" was praised for its twisting genre conventions that made it a big hit in Korea (with over 5.1 million admissions, making it the most watched film during the year 2003 in South Korea) as well as a successful piece of social cinema that engaged with Korea's troubled history.
Document 12: Memories of Murder: Memories of Murder () is a 2003 South Korean crime-drama film co-written and directed by Bong Joon-ho. It is based on the true story of Korea's first serial murders in history, which took place between 1986 and 1991 in Hwaseong, Gyeonggi Province. Song Kang-ho and Kim Sang-kyung star as Detective Park and Detective Seo, respectively, two of the detectives trying to solve the crimes.
Document 13: Kim Sang-kyung: Kim Sang-kyung (born June 1, 1972) is a South Korean actor. He is best known for his leading roles in "Memories of Murder" (2003) and "May 18" (2007). Two of his films directed by Hong Sang-soo, "Tale of Cinema" (2005) and "Ha Ha Ha" (2010), screened at the Cannes Film Festival. Kim has also starred in numerous television dramas, notably the period epic "King Sejong the Great" (2008) and the family comedy "What's With This Family" (2014).
Document 14: Shin Ha-kyun: Shin Ha-kyun (born May 30, 1974) is a South Korean actor. His notable films include "Joint Security Area" (2000), "Sympathy for Mr. Vengeance" (2002), "Save the Green Planet!" (2003), and "Welcome to Dongmakgol" (2005).
Document 15: Kim Sung-kyun: Kim Sung-kyun (born May 25, 1980) is a South Korean actor. Kim began his career in theatre, then made his screen debut as a gangster boss's faithful henchman in "", followed by supporting roles in "The Neighbor", "Reply 1994", "Reply 1988" and "" (2016).
ground_truth: May 18