Question: What agency discovered an American singer based in South Korea who was on the first season of a South Korean reality show that aired every Friday on KBS 2TV from April 8 to December 2, 2016 ?

Context paragraphs:
Crisis Escape No. 1: Crisis Escape No. 1 () is a 2005 South Korean television program.  It airs on KBS 2TV on Monday at 20:55 beginning July 9, 2005.

Sister's Slam Dunk: Sister's Slam Dunk () is a South Korean reality show that aired every Friday on KBS 2TV from April 8 to December 2, 2016.  The show's first season featured an all-female cast consisting of Ra Mi-ran, Kim Sook, Hong Jin-kyung, Min Hyo-rin, Jessi and Tiffany, and followed their attempts at fulfilling each cast member's dream using a budget of ₩2,196,000 or approximately $2,000.

Volume Up (radio show): Volume Up () is a South Korean radio show currently hosted by Kim Ye-won on KBS 2FM in Seoul and UKBS MUSIC DMB in the provinces, airing everyday at 20:00–22:00 (KST), just right after KBS 2FM News 8PM edition.  Known as the "ruler of the dinner time" the show became the highest-rated radio program in its time slot across both AM and FM bandwidths in Seoul.  KBS 2FM was South Korea's No. 10 station.  Popular for soft music playlist, a short soap opera segment called "Lie to Me" based on the 2011 TV drama of the same title and Yoo's "My Final Message".

Where Are We Going, Dad? (TV series): Where Are We Going, Dad?  () is a Chinese reality TV show broadcast on Hunan Television.  Based on the original South Korean reality show "Dad!  Where Are We Going? ", the first season debuted on 11 October 2013 featuring five fathers and their children as they travel to rural places.  The series has become a massive ratings hit, attracting 75 million viewers per episode to Hunan Television every week.  It was adapted into a film, "Where Are We Going, Dad? ", that was released on 31 January 2014.  A second film, "Where Are We Going, Dad?  2", was released on 19 February 2015. The second season debuted on June 2014 while the third season filmed on 17 May 2015 in Yulin.

Maō: Maō (魔王 , lit.  The Devil, or Demon King ) , is a Japanese remake of the Korean suspense drama series titled "The Devil" () which aired on KBS 2TV in 2007.  The drama stars Satoshi Ohno of Arashi and Toma Ikuta, both under the talent agency Johnny & Associates.

Hello Counselor: Hello Counselor () is a South Korean reality show that debuted in November 2010.  It is hosted by Shin Dong-yup, Lee Young-ja, and Cultwo (Jung Chan-woo, Kim Tae-gyun).  Choi Tae-joon joined the show as host from August 29, 2016 to September 4, 2017.  According to the show's official description through KBS, "Hello Counselor" is a talk show with an emphasis on regular people, regardless of age or gender, that aims to help take down communication barriers by sharing stories about life.  The program airs every Monday on KBS World.

Jessica Jung: Jessica Jung (born April 18, 1989), known professionally as Jessica, is an American singer, songwriter, actress, model, fashion designer, and businesswoman currently based in South Korea.  Jung was born and raised in San Francisco, California.  At the age of eleven, she was discovered by South Korean entertainment agency S.M. Entertainment and subsequently moved to South Korea.  In 2007, Jung debuted as a member of the South Korean girl group Girls' Generation.  The group later became one of the best-selling artists in South Korea, and one of South Korea's most popular girl groups nationwide and worldwide.

Tiffany Hwang: Stephanie Young Hwang (born August 1, 1989), known professionally as Tiffany or Tiffany Hwang, is an American singer based in South Korea.  Born and raised in California, she was discovered by South Korean entertainment agency S.M. Entertainment at the age of fifteen and subsequently moved to South Korea.  After four years of training, Tiffany debuted as a member of girl group Girls' Generation (and later its subgroup TTS) in August 2007, who went on to be one of the best-selling artists in South Korea and one of South Korea's most popular girl groups worldwide.  In 2016, following her contribution to several side projects during the early part of her career, Tiffany became the second Girls' Generation member to release a solo debut album, "I Just Wanna Dance".

Gag Concert: Gag Concert (Korean: ) is a Korean sketch-comedy TV show on KBS 2TV network.  It began airing in September 1999 and is the oldest of South Korea current comedy programs.  The show is recorded on Wednesdays and airs on KBS 2TV on Sundays at 9:15 PM.  The show airs with English subtitles after two weeks on KBS World TV on Saturdays at 6:00 PM.

MBC TV: MBC TV ("HLKV-DTV") is a terrestrial television channel from Seoul, South Korea operated and owned by Munhwa Broadcasting Corporation, since its inception of regular broadcasts that began on August 8, 1969.  It is also part of the 20 stations of MBC regional television and as a national broadcaster in conjunction with KBS 1TV, KBS 2TV, EBS 1TV, EBS 2TV and SBS TV.

Supporting paragraphs: Sister's Slam Dunk Tiffany Hwang
Answer: S.M. Entertainment