question: Since 2012 Park Jung-chul has been a cast member of a reality show that first aired on which day ?
answer: October 21, 2011
context: Title: Kim Kyung-ran
  Passage: Kim Kyung-ran (born September 28, 1977) is a South Korean television personality and former announcer.  She was a cast member in the reality show "", and is a cast member in the reality show "".
  Title: First Love Again
  Passage: First Love Again () is a 2017 South Korean television series starring Myung Se-bin, Kim Seung-soo, Wang Bit-na, and Park Jung-chul.  The series airs on KBS2 on Monday to Friday from 7:50 p.m. to 8:30 p.m. (KST).
  Title: Wife Returns
  Passage: Wife Returns (; also known as My Wife is Back) is a South Korean television series starring Kang Sung-yeon, Jo Min-ki, Yoon Se-ah, Park Jung-chul, and Kim Mu-yeol.  It aired on SBS from November 2, 2009 to April 16, 2010 on Mondays to Fridays at 19:20 for 116 episodes.  The melodrama deals with a broken family, betrayal, adultery and revenge with a dash of violence.  "Wife Returns" revolves around a woman who gets revenge on the husband of her identical twin sister.  The sister was forced to leave her husband and their child by her mother-in-law.
  Title: Angel's Revenge (TV series)
  Passage: Angel's Revenge (; lit.  "A Girl by Nature") is a 2014 South Korean daily drama starring Yoon So-yi, Park Jung-chul, Moon Bo-ryung and Kwon Yul .  It aired on KBS2 from January 6 to June 2, 2014 for 103 episodes.
  Title: Miss Malaika Ghana
  Passage: Miss Malaika Ghana is a beauty pageant, reality show which first aired in Ghana in 2003.  The show is produced by Charter House Productions and airs on Ghana television station TV3 as well as DSTV channel Africa Magic.  The pageant is produced as a 12- to 13-week reality show which shows the search for a Ghanaian representative for the Miss Malaika continental competition.  It was the first beauty pageant show to be aired as a reality series in Ghana.
  Title: Park Jung-chul
  Passage: Park Jung-chul (born Park Chul on November 5, 1976) is a South Korean actor.  Park made his acting debut in 1997 through a talent search by the KBS network, and has since starred in the romantic comedy film "Oh!  Happy Day" (2003) and television dramas such as "Legend" (2001), "Present" (2002), "Remember" (2002), "Blue Fish" (2007), "Eight Days, Assassination Attempts against King Jeongjo" (2007), "War of Money: The Original" (2008), "My Lady" (2008), "Wife Returns" (2009), "Gwanggaeto, The Great Conqueror" (2011), and "Angel's Revenge" (2014).  He has also been a cast member of the reality show "Law of the Jungle" since 2012.
  Title: The Last Reality Show
  Passage: The Last Reality Show (Swedish: "Den Sista Dokusåpan" ) is a Swedish TV series that aired on TV 6 in Sweden the spring of 2012.  The show portrays a zombie apocalypse as seen through the eyes of the cast and crew of a reality show.  The title of the series refers to the name of said reality show being produced which is to bring forth the ultimate Swedish reality star (reality show stars of Swedish reality shows play themselves) as well that the fact that almost every episode features the death of one of the reality stars.  The show featured 8 episodes.  The series was created and produced by Tord Danielsson, directed by Oskar Mellander and photographed by Anders Jacobsson of Evil Ed fame.
  Title: Law of the Jungle (TV series)
  Passage: Law of the Jungle (Korean: 정글의 법칙 ) is a South Korean reality-documentary show on SBS.  It was first aired on October 21, 2011.  This show is a hybrid of reality-variety television, natural documentaries, and human drama; a new concept of programming.  The cast of celebrities travel to less-habitated, natural places to survive on their own and experience life with local tribes and people.  Originally airing at the Friday 11:05 pm KST time slot, the program was switched into "Good Sunday" beginning May 6, 2012, airing before "Running Man" at the 5:00 pm time slot, replacing "K-pop Star Season 1".  With the return of "K-pop Star Season 2" to "Good Sunday", the program returned to Friday nights but airing at 10:00 pm instead beginning November 16, 2012.  Originally airing as "Kim Byung-man's Law of the Jungle" (Korean: 김병만의 정글의 법칙 ) after the creator and "clan leader" Kim Byung-man, "Kim Byung-man's" was dropped from the title after episode 40.
  Title: General Hospital cast members
  Passage: "General Hospital" is the longest running American television serial drama, airing on ABC.  Created by Frank and Doris Hursley, the series premiered on April 1, 1963.  The longest-running cast member is Leslie Charleson, who has portrayed Dr. Monica Quartermaine since August 17, 1977, also making her one of the longest-tenured actors in American soap operas.  Former cast member Rachel Ames was previously the series' longest-running cast member, portraying Audrey Hardy from 1964 to 2007, and making guest appearances in 2009 and 2013, the latter for the series' fiftieth anniversary.  Ames made a special appearance on October 30, 2015.  Actors Genie Francis and Kin Shriner, who portray Laura Spencer and Scott Baldwin, are the second and third longest-running cast members, having joined "General Hospital" in February and August 1977, respectively.  Actress Jacklyn Zeman — who portrays Bobbie Spencer — is the fourth longest-running cast member, joining the serial in December 1977.  Actress Jane Elliot, who joined the serial in June 1978 as Tracy Quartermaine, is the fifth longest-running cast member, joining "General Hospital" in June 1978 until her departure in May 2017.  Former cast member Anthony Geary, who portrayed Luke Spencer, was the sixth longest-running cast member, having joined "General Hospital" in November 1978.  The following list is of cast members who are currently on the show: the main and recurring cast members, or those who are debuting, departing or returning to the series.
  Title: The Young and the Restless cast members
  Passage: "The Young and the Restless" is a long-running American television soap opera, created by William J. Bell and Lee Phillip Bell for CBS.  It first aired on March 26, 1973.  The longest-running current cast member is Doug Davidson, who has portrayed private investigator Paul Williams since May 23, 1978.  Jeanne Cooper, who portrayed the soap opera's matriarch Katherine Chancellor, holds the record for the series' longest-running cast member, airing from November 1973 until her death in May 2013.  Melody Thomas Scott and Eric Braeden, who portray Nikki and Victor Newman, are the second and third longest-running cast members, having joined in February 1979 and February 1980, respectively.  Kate Linder has portrayed Esther Valentine since April 1982, and rounds out the series' top four longest-running cast members.  The following list is of cast members who are currently on the show: both main and recurring members, as well as those who are debuting, departing or returning from the series.
citations: Park Jung-chul Law of the Jungle (TV series)