Question: Which of the following co founded the band Pink Floyd: Roger Waters or Kim Tae-yeon?

Context articles: The Endless River
Kim Tae-yeon
A Momentary Lapse of Reason
Radio K.A.O.S.
Time (Pink Floyd song)
The Final Cut (album)
The Pink Floyd and Syd Barrett Story
Roger Waters
Ron Geesin
Any Colour You Like

The Endless River is the fifteenth and final studio album by the English rock band Pink Floyd.
 It was released on 7 November 2014 in Friday-release countries and on 10 November elsewhere by Parlophone Records in the United Kingdom and by Columbia Records in the United States.
 It was the third Pink Floyd album led by guitarist and singer David Gilmour following Roger Waters' departure in 1985 and the first following the death of keyboardist Rick Wright in 2008, who appears posthumously.
Kim Tae-yeon (born March 9, 1989), referred to as Taeyeon, is a South Korean singer.
 She had been a trainee at S.M. Entertainment's Starlight Academy during her middle school years before debuting as a member of the agency's girl group, Girls' Generation, in 2007.
 Since then, she has risen to prominence due to the group's success on the Asian music scene and further participated in the agency's projects Girls' Generation-TTS and SM the Ballad.
 Aside from group activities, she has also recorded songs for various television dramas and movies.
A Momentary Lapse of Reason is the thirteenth studio album by English progressive rock band Pink Floyd, released in the UK and US in 7 September 1987, on the labels EMI and Columbia.
 It followed guitarist David Gilmour's decision to include material recorded for his third solo album on a new Pink Floyd album with drummer Nick Mason and keyboardist Richard Wright.
 Although for legal reasons Wright could not be re-admitted to the band, Wright and Mason helped Gilmour craft what became the first Pink Floyd album since the December 1985 departure of bass guitarist, singer, and primary songwriter Roger Waters.
Radio K.A.O.S. is a studio album by English rock musician and former Pink Floyd member Roger Waters.
 Released on 15 June 1987 in the United Kingdom and June 16 in the United States, it was Waters' second solo album after his split from Pink Floyd in 1985.
 Like his previous and future studio albums and many works of his during his time with Pink Floyd, the album is a concept album that is based on a number of key factors of politics in the late 1980s, including monetarism and its effect on citizens, popular culture of the time, and the events and consequences of the Cold War.
 It also makes criticisms of Margaret Thatcher's government, much like Pink Floyd's "The Final Cut", another album conceived by Waters.
 The album follows Billy, a mentally and physically disabled man from Wales, forced to live with his uncle David in Los Angeles after his brother Benny was sent to prison after protesting against the government, following his dismissal from his job in mining due to "market forces".
 The album explores Billy's mind and view on the world through an on-air conversation between him and Jim, a disc jockey at a local fictitious radio station named Radio KAOS.
"Time" is the fourth track from the English progressive rock band Pink Floyd's 1973 album "The Dark Side of the Moon", and the only song on the album credited to all four members of the band, though the lyrics were written by Roger Waters.
 It is the final Pink Floyd song credited to all four members and the last to feature Richard Wright on lead vocals until "Wearing the Inside Out" on "The Division Bell".
 This song is about how time can slip by, but many people do not realise it until it is too late.
 Roger Waters got the idea when he realised he was no longer preparing for anything in life, but was right in the middle of it.
 He has described this realisation taking place at ages 28 and 29 in various interviews.
 It is noted for its long introductory passage of clocks chiming and alarms ringing, recorded as a quadrophonic test by Alan Parsons, not specifically for the album.
The Final Cut is the twelfth studio album by the English progressive rock band Pink Floyd, released on 21 March 1983 by Harvest Records in the United Kingdom and on 2 April by Columbia Records in the United States.
 It was Pink Floyd's last studio album to include founding member, bass guitarist and songwriter Roger Waters, and their only album on which he alone is credited for writing and composition.
 It was also the only Pink Floyd album that does not feature keyboardist Richard Wright.
 Waters originally planned "The Final Cut" as a soundtrack album for the 1982 film "Pink Floyd – The Wall".
 With the onset of the Falklands War, he rewrote it as a concept album, exploring what he considered the betrayal of his father, who died serving in the Second World War.
 Waters sings most of the lyrics; lead guitarist David Gilmour provides lead vocals on only one track.
 The packaging, also designed by Waters, reflects the album's war theme.
The Pink Floyd and Syd Barrett Story is a 2001 television documentary produced by Otmoor Productions for BBC Two's" Omnibus" series and originally called Syd Barrett: Crazy Diamond (in the US, a slightly modified version aired as Pink Floyd & Syd Barrett in the "VH1 Legends" series in January 2002).
 Directed by John Edginton, the film includes interviews with all the Pink Floyd members - Roger Waters, David Gilmour, Nick Mason and Richard Wright - plus the "fifth Pink Floyd", Bob Klose, who left the band in 1965, getting their points of view on the original band founder Syd Barrett.
 The film includes rare early television appearances of Pink Floyd, and home movies.
George Roger Waters (born 6 September 1943) is an English singer, songwriter, bassist, and composer.
 In 1965, he co-founded the progressive rock band Pink Floyd with drummer Nick Mason, keyboardist Rick Wright, and guitarist, singer, and songwriter Syd Barrett.
 Waters initially served as the group's bassist, but following the departure of Barrett in 1968, he also became their lyricist, co-lead vocalist, and conceptual leader.
Ronald Frederick Geesin (born 17 December 1943, in Stevenston, Ayrshire, Scotland) is a Scottish musician and composer, noted for his quirky creations and novel applications of sound.
 Geesin is well known for his collaborations with Pink Floyd and Roger Waters.
 After the band found themselves hopelessly deadlocked over how to complete the title track from Atom Heart Mother in 1970, he worked with Pink Floyd as an orchestrator and organizer, and he also wrote the brass introduction.
 Geesin also collaborated with the band's Roger Waters (the two men shared a love of golf) on the unconventional film soundtrack "Music from "The Body"" (1970), sampling sounds made by the human body.
 Ron Geesin played piano with The Downtown Syncopators, a Dixieland band emulating the 'Original Dixieland Band' during the 1960s.
 The band was based in or near Crawley, Sussex, UK.
"Any Colour You Like" is the eighth track from English progressive rock band Pink Floyd's 1973 album, "The Dark Side of the Moon".
 It is an instrumental written by David Gilmour, Richard Wright and Nick Mason, making it one of three tracks on the album that Roger Waters did not receive writing credit for, the last Pink Floyd track that Waters had no part in writing while he was still a member, and the last Pink Floyd studio track credited to Mason until "The Endless River".