Question: Revolution, is a South Korean television series starring Choi Si-won, a South Korean singer, songwriter, model, and actor, born on which date?
Context: Revolution () is an upcoming South Korean television series starring Choi Si-won, Kang So-ra and Gong Myung.  The series marks Choi Si-won's first acting project after his military service.  It is set to air on tvN starting October 14, 2017 at 21:00 KST, replacing "Live Up to Your Name, Dr. Heo". Choi Si-won (born April 7, 1986) is a South Korean singer, songwriter, model, and actor.  He is a member of the South Korean boy band Super Junior and its Mandopop subgroup, Super Junior-M. She Was Pretty () is a 2015 South Korean television series starring Hwang Jung-eum, Park Seo-joon, Go Joon-hee and Choi Si-won.  It aired on MBC from September 16 to November 11, 2015, on Wednesdays and Thursdays at 22:00. Twenty Again (; lit.  "Twenty Years Old for the Second Time") is a 2015 South Korean television series starring Choi Ji-woo, Lee Sang-yoon, Choi Won-young, Kim Min-jae, and Son Na-eun.  It aired on tvN from August 28 to October 17, 2015 on Fridays and Saturdays at 20:30 for 16 episodes. Tunnel () is a 2017 South Korean television series starring Choi Jin-hyuk, Yoon Hyun-min and Lee Yoo-young.  It replaced "Voice" and aired on cable network OCN every Saturdays and Sundays at 22:00 (KST) from March 25 to May 21, 2017 for 16 episodes.  The series was inspired by the Hwaseong serial murders. Pride and Prejudice (Hangul: 오만과 편견 ; Hanja: 傲慢과 偏見 ; RR: "Omangwa Pyeongyeon " ) is a 2014 South Korean television series starring Choi Jin-hyuk, Baek Jin-hee, Choi Min-soo, Lee Tae-hwan and Son Chang-min.  It aired on MBC from October 27, 2014 to January 13, 2015 on Mondays and Tuesdays at 22:00 for 21 episodes. Star's Lover (; also known as Celebrity's Sweetheart) is a 2008 South Korean television series starring Choi Ji-woo and Yoo Ji-tae that aired on SBS.  A love story between a star actress and an ordinary man, director Boo Sung-chul said the series was inspired by the 1999 film "Notting Hill". Eyes of Dawn () is a South Korean television series starring Choi Jae-sung, Chae Shi-ra and Park Sang-won.  Directed by Kim Jong-hak and written by Song Ji-na based on the 10-volume novel of the same name by (published in 1981), the story spans the years from the Japanese colonial period to World War II, Korea's liberation and the Korean War. Emperor of the Sea (; literally "Sea God") is a South Korean television drama series starring Choi Soo-jong, Chae Shi-ra, Song Il-gook، Soo Ae and Chae Jung-an It aired on KBS2 from November 24, 2004 to May 25, 2005 on Wednesdays and Thursdays at 21:55 for 51 episodes.  The period drama is based on Choi In-ho's 2003 novel "Hae-sin", which depicts the life of Jang Bogo, who rises from a lowly slave to a powerful maritime figure who dominated the East Asia seas and international trade during the Unified Silla Dynasty. Beautiful Days () is a 2001 South Korean television drama series starring Lee Byung-hun, Choi Ji-woo, Ryu Si-won and Lee Jung-hyun.  The drama is the first entry in director Lee Jang-soo's "Heaven Trilogy" which includes "Stairways to Heaven" in 2003 and "Tree of Heaven" in 2006.  It aired on SBS from March 14 to May 31, 2001 on Wednesdays and Thursdays at 21:55 for 24 episodes.
Answer: April 7, 1986