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? 

Context paragraphs:
Yoon Jung-hee (born 1980): Yoon Jung-hee (born December 21, 1980) is a South Korean actress.  Yoon was the representative of Gyeonggi Province at the Miss Korea beauty pageant in 2000, then lived in obscurity for several years while trying to find work as an actress.  She made her breakthrough in 2005 in the hit drama "Dear Heaven", followed by more leading roles on television, including "Blissful Woman" (2007), and "Family's Honor" (2008).  She also starred in the horror film "Death Bell" (2008).

Chandra Kaluarachchi: Chandra Kaluarachichi (born April 6, 1943) is a Sri Lankan actress.  Since her debut role as 90-year-old woman in "Raththaran putha" by Arnold Wickramasuriya in 1962, Chandra has become recognized for playing motherly and other figures on stage, film, radio and television serials.

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).

Shim Eun-ha: Shim Eun-ha is a retired South Korean actress.  Shim rose to popularity in the 1990s, starring in some of the highest-rated Korean dramas of all time, such as "The Last Match", "M" and "Trap of Youth".  But she is best known for her acclaimed performance in Hur Jin-ho's melodrama "Christmas in August", for which she swept the Best Actress awards in 1998.  This was followed by another well-received turn in romantic comedy "Art Museum by the Zoo".  Shim suddenly retired from show business at the height of her fame in 2001, and her mystique solidified her status as the most beloved South Korean actress of that decade.

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.

Oh! My Lady: Oh!  My Lady () is a 2010 South Korean television series starring Chae Rim and Choi Siwon.  It aired on SBS from March 22 to May 11, 2010.  It is a romantic comedy about a top star who finds himself living with his manager, a 35-year-old woman who is trying to earn money to get custody of her child.

Cha Bum-kun: Cha Bum-kun (; ] or ] ] ; born 22 May 1953) is a South Korean football manager and former player, nicknamed Tscha Bum in Germany ("Cha Boom") because of his name and his thunderous ball striking ability.  The nickname was first used by the German Kicker Magazine, which also named Cha as one of the greatest footballers of the 1980s.  Cha was born in Hwaseong in the South Korean province of Gyeonggi.  By 1972 he had been capped by the Korean national team as the youngest player in history called up to the squad.  After developing into the top player in his country, Cha wanted to play in Germany's Bundesliga.  Cha promised to learn skills in Germany and help Korea advance in football.  He eventually rose to international stardom and fulfilled his promise by coming back to South Korea after his retirement and starting youth football clinics.  He coached the national team in the 1998 FIFA World Cup and also Ulsan Hyundai and Suwon Samsung Bluewings of the K League.  In South Korea, Cha is greatly respected for his accomplishments in the Bundesliga and the South Korean national team.  During his career, Cha has played for SV Darmstadt 98, Eintracht Frankfurt and Bayer 04 Leverkusen, and represented his national side 135 times, scoring 58 goals.  He was given the title "Asia's Player of the Century" by the International Federation of Football History and Statistics.  He is the all-time leading goal scorer for the South Korean national team.

Park Si-yeon: Park Si-yeon (born Park Mi-seon on March 29, 1979) is a South Korean actress.  She joined the Miss Korea pageant in 2000, and using that as a springboard to an acting career, she made her acting debut in China in 2004, appearing in minor roles in several CCTV dramas.  In 2005 Park was cast in her first starring role in the Korean drama "My Girl", though at the time she was more known for dating actor-singer Eric Mun.  As she built her filmography in the following years, Park overcame early criticism of her acting skills and eventually gained respect as an actress in TV series such as "La Dolce Vita", "Coffee House" and "The Innocent Man", as well as the films "The Fox Family", "A Love", and "The Scent".

Lee Hye-young (actress, born 1962): Lee Hye-young (born November 25, 1962) is a South Korean actress.  She is the daughter of celebrated film director Lee Man-hee, who died in 1975 when she was in middle school.  Lee began her acting career in 1981 at the age of 17 through a local musical theatre production of "The Sound of Music".  Since then she has performed in theater, feature and short films, and television.  She was one of the most prominent South Korean actresses in the 1980s, starring in films such as "The Blazing Sun" (1985), "Winter Wanderer" (1986), "Ticket" (1986), "The Age of Success" (1988), "North Korean Partisan in South Korea" (1990), "Fly High Run Far" (1991), "Passage to Buddha" (1993), and "No Blood No Tears" (2002).  Lee also played supporting roles in the Korean dramas "I'm Sorry, I Love You" (2004), "Fashion 70's" (2005) and "Boys Over Flowers" (2009).

Park Sa-rang: Park Sa-rang (born March 4, 2003) is a South Korean actress.  Park began her career as a child actress, and has starred in television series and films such as "A Happy Woman" (2007), "Bestseller" (2010) and "Grand Prix" (2010).

Supporting paragraphs: Herb (film) Kang Hye-jung
Answer: January 4, 1982