Question: When was the South Korean actress who starred in Herb as a 20-year-old woman with the mental and emotional skills of a seven-year-old born? 

full_context: Document 1: Jae Hee: Jae Hee (born Lee Hyun-kyun on May 25, 1980) is a South Korean actor. He is best known for his leading roles in the 2004 arthouse film "3-Iron" and the 2005 television series "Sassy Girl Chun-hyang".
Document 2: Lee Young-ae: Lee Young-ae (born January 31, 1971) is a South Korean actress. She is known for her appearances in the Korean historical drama "Dae Jang Geum" (2003), and as a revenge seeking single mother in Park Chan-wook's crime thriller film "Sympathy for Lady Vengeance" (2005).
Document 3: 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 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: Seo Young-hee: Seo Young-hee is a South Korean actress. She is best known for her supporting role in thriller "The Chaser" (2008) and her award-winning lead role in horror film "Bedevilled" (2010).
Document 6: Cho Yeo-jeong: Jo Yeo-jeong (born February 10, 1981) is a South Korean actress. She is best known for her leading roles in the period films "The Servant" (2010) and "The Concubine" (2012) as well as starring in the television series "I Need Romance" (2011).
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: Nobody's Daughter Haewon: Nobody's Daughter Haewon () is a 2013 South Korean drama film written and directed by Hong Sang-soo. The narrative is told in diary format and chronicles a few days in the life of a young woman (Jung Eun-chae) who spins into depression following the departure of her mother to Canada. She falls back on a troubled affair with a professor (Lee Sun-kyun), who offers to whisk her away.
Document 9: Ahn Seo-hyun: Ahn Seo-hyun (born January 12, 2004) is a South Korean actress. She began her career as a child actress in 2008, and has since appeared in films and television series such as "The Housemaid" (2010), "Single-minded Dandelion" (2014) and the critically acclaimed Netflix film "Okja" (2017), which premiered at the 2017 Cannes Film Festival in competition for the "Palme d'Or".
Document 10: Miss Granny: Miss Granny (; lit. "Suspicious Girl") is a 2014 South Korean comedy-drama film directed by Hwang Dong-hyuk. Na Moon-hee stars as a woman in her 70s who magically finds herself in the body of her 20-year-old self (Shim Eun-kyung) after having her picture taken at a mysterious photo studio. After opening in theaters on January 22, 2014, it became a huge box office hit, with 8.65 million tickets sold.
Document 11: Herb (film): Herb () is a 2007 South Korean drama film, directed by Heo In-moo. Kang Hye-jung stars in the lead role as a 20-year-old woman with the mental and emotional skills of a seven-year-old, who falls in love with a policeman she sees as her Prince Charming, but must face tragedy when she is forced to deal with certain realities about herself and those around her.
Document 12: 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 13: Kang Ye-won: Kang Ye-Won (born Kim Ji-Eun on March 15, 1980) is a South Korean actress. She is best known for her roles in "Haeundae", "Harmony" and "Quick".
Document 14: Kang Hye-jung: Kang Hye-jung (Korean: 강혜정, born January 4, 1982) is a South Korean actress. Kang first achieved recognition for her role in the arthouse film "Nabi" (2001), and two years later, she rose to stardom in 2003 through Park Chan-wook's revenge thriller "Oldboy". For the next few years, she continue to appear in a diverse range of roles which drew her further critical acclaim, notably in Han Jae-rim's relationship drama "Rules of Dating" (2005), and Park Kwang-hyun's Korean War comedy "Welcome to Dongmakgol" (2005). In recent years, Kang has starred in more conventional melodramas such as "Herb" (2007) and "Girlfriends" (2009).
Document 15: Jun Ji-hyun: Jun Ji-hyun (born Wang Ji-hyun on 30 October 1981), also known as Gianna Jun, is a South Korean actress. She rose to fame for her role as The Girl in the romantic comedy "My Sassy Girl" (2001), one of the highest-grossing Korean comedies of all time. Other notable films include "Il Mare" (2000), "Windstruck" (2004), "The Thieves" (2012), "The Berlin File" (2013) and "Assassination" (2015).
ground_truth: January 4, 1982