Question: Which South Korean reality-documentary show was Oh Jong-hyuk a former cast member of?

Context paragraphs:
Kim Seul-gi: Kim Seul-Gi (born October 10, 1991) is a South Korean actress who starred in many critically acclaimed dramas including "Oh My Ghostess" (2015), "Splash Splash Love" (2015) and "The Guardians" (2017).  She is also a former cast member of tvN's entertainment show "SNL Korea".

Basketball Wives LA season 6: The sixth season of "Basketball Wives LA" was confirmed by VH1 with a premiere date of April 17, 2017.  Filming started in October 2016 and Evelyn Lozada a former cast member of Basketball Wives has confirmed her return on social media and via The Real where she severed as a guest host for a week.  Jennifer Williams also a former cast member of Basketball Wives has been spotted filming with cast member Tami Roman.  Also this season four newbies Aja Metoyer, Keonna Green, Bonnie-Jill Laflil, and Evelyn Lozada taking on the main cast replacing departing cast members Angel Brinks, LaTosha Duffey, Angel Love.

List of previous General Hospital cast members: "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.  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.  Anthony Geary, who has portrayed Luke Spencer, was the fourth longest-running cast member, having joined "General Hospital" in November 1978.  Geary left the show on July 27, 2015.  This is a list of former, notable guest appearances, and deceased cast members.

Oh Jong-hyuk: Oh Jong-hyuk (; born February 16, 1983) is a South Korean singer.  He debuted as a member of Click-B in 1999, and made his debut as a solo artist in September 2006 with the album ""Issue"".  He was a former cast member in the variety show "Law of the Jungle".  In September 2013, T-ara's management Core Contents Media released an official statement confirming that He and Soyeon of T-ara have been dating for the past 3 years.  He appeared on MBC King of Mask Singer in 2015 (Episode 35 and 36 with the stage name "Lonely Man Leon").

Made in Chelsea: South of France: Made in Chelsea: South of France, a spin-off series of Made in Chelsea, a British structured-reality television programme, was confirmed on 8 June 2016, and began airing on 1 August 2016.  and concluded after six episodes on 5 September 2016.  It was announced that the cast of "Made in Chelsea" would be travelling to Cannes to film a special series of the show.  It was revealed that this would be a stand-alone series which would not be promoted as the twelfth series.  The twelfth series followed in October 2016.  This is the third spin-off show filmed away from Chelsea following "" in 2014 and "" in 2015.  The series featured the return of former cast member Francis Boulle.  Whilst most of the Chelsea cast featured in this spin-off, there was notable absences from Josh "JP" Patterson, Richard Dinan and Rosie Fortescue.  It is the only series to include French cast member Lukas Avalon, the last to include Louise's ex-boyfriend Alik Alfus, and first to include her new boyfriend Ryan Libbey.  The series focused heavily on the love triangle between Francis, Olivia and Toff before he finally chooses to be with Olivia causing bitterness for Toff, as well as both Jess and Ollie finding holiday romances.  It also included the demise of Alex and Jamie's long-term friendship as Jamie chose to believe Frankie over Alex following multiple revelations.

The Only Way Is Essex (series 21): The twentieth-first series of the British reality television programme "The Only Way Is Essex" was confirmed on 3 June 2015 when it was announced that it had renewed for at least a further six series, taking it up to 21 series.  The series began on 10 September 2017 with the cast going to Marbella, and will conclude after eighteen episodes, making it the joint longest series to date after it was confirmed that the lengths of each series would be extended.  Ahead of the series it was announced that James Argent would be returning to the series following his break from the show.  It was also confirmed that after making brief appearances during the previous series, Lauren Pope and Mario Falcone would be returning to the series as a full-time cast member.  With this announcement, it was revealed that Mike Hassini would also be returning to the series having previously left the show after the eighteenth series.  Former cast member Elliott Wright also made an appearance during the second episode of the series.  This was also the first series to include new cast members Maddie Hooper, Ruby Lacey and Taylor Barnett.

General Hospital cast members: "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.

Geordie Shore: Big Birthday Battle: Geordie Shore: Big Birthday Battle, a spin-off series of Geordie Shore, a British television programme based in Newcastle upon Tyne was confirmed on 6 February 2016 following cast member Scott's win on "Celebrity Big Brother" it was announced that he'd be filming for the next series of "Geordie Shore" the next day.  However, on 12 February 2016 it was confirmed that the cast past and present would be reuniting for a mini-series to celebrate five years of the show.  The series began airing on 10 May 2016.  It features all of the current cast members and the return of former cast members Daniel Thomas-Tuck, James Tindale, Jay Gardner, Kyle Christie, Ricci Guarnaccio and Sophie Kasaei.  The only past cast members that did not return for this series were Greg Lake, Rebecca Walker and Vicky Pattison.  This series is classified as ""Geordie Shore: Big Birthday Battle"" and not billed as the thirteenth series.  The series also features a new twist with Gaz and Charlotte going head-to-head as team captains planning the best nights out for their team.  This series includes a special episode airing on the fifth birthday, on 24 May 2016 featuring the Geordie's reactions of previous episodes.  The series also includes the show's 100th episode, airing on 31 May 2016.  On 1 June 2016 it was announced that original cast member Charlotte Crosby had quit the show and that this would be her final series.

Law of the Jungle (TV series): 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.

Geordie Shore (series 8): The eighth series of Geordie Shore, a British television programme based in Newcastle upon Tyne was confirmed in October 2013 after cast member Holly Hagan announced it on Twitter and is expected to air 22 July 2014.  Filming began for this series on 25 March 2014.  This series will be the first not to feature former cast member Sophie Kasaei after she was axed during the seventh series following a racial slur.  All other cast members from the previous series return with the addition of new cast member Aaron Chalmers who had briefly appeared during series two of the show as a one-night stand of Holly's.  In May 2014, Gaz announced that the series would begin in July.  An exclusive first trailer for the series was released during an episode of Ex On The Beach on 3 June 2014.  It was revealed on 10 June 2014 that another new cast member had joined, 21-year-old Kyle Christie.

Supporting paragraphs: Oh Jong-hyuk Law of the Jungle (TV series)
Answer: Law of the Jungle