Question: When was the group of which Zelo is a member formed ?

Context articles: AOA Black
Ultramagnetic MCs
B.A.P (South Korean band)
Zelo
Hasan Sohaib Murad
D.Holic
Western European and Others Group
Play (Swedish group)
Mark Middleton
Alabama Independent School Association

AOA Black is a subgroup of the South Korean girl group AOA, formed by FNC Entertainment in 2013.
 It is currently composed of three AOA members: Jimin, Yuna, Mina and former member Youkyung, as the guest member.
 Youkyung left the agency of the group in October 2016, but she is still part of the group as a guest member.
 Choa left the group and sub-unit on June 30, 2017.
 The group is notable for their debut single album, "Moya".
The Ultramagnetic MCs is an American hip hop group based in Bronx, New York.
 Founded by Kool Keith, the group also includes Ced Gee, TR Love, and Moe Love.
 Tim Dog became an unofficial member in 1989.
 In 1990, DJ Jaycee was added as Roadmanager and backup DJ.
 Big.D was put down with the crew by Kool Keith in 1989.
 In 2006 Kool Keith and Big.D formed the supergroup The Commissioner, and in 1999 Big.D and D.J Moe-Love also formed the powerhouse group Slaughterhouse-Cartel.
 A former member, Rooney Roon, was fired following an assault arrest.
 Beat-boxing legend Rahzel was also involved with the group early in its career.
 The group's work was associated with unorthodox sampling, polysyllabic rhymes, and bizarre lyrical imagery.
B.A.P (Korean: 비에이피; an acronym for Best Absolute Perfect) is a South Korean boy group formed in 2012 under TS Entertainment.
 The group's six members are Yongguk, Himchan, Daehyun, Youngjae, Jongup, and Zelo.
Choi Jun-hong (Hangul: 최준홍; born October 15, 1996) better known by his stage name Zelo, is a South Korean rapper, dancer, singer and beatboxer.
 He is best known as a member of the South Korean boy group B.A.P.
 He made his recording debut with the single "Never Give Up" under B.A.P's sub-unit Bang&Zelo in November 2011.
 He is currently signed under TS Entertainment.
Hasan Sohaib Murad (born October 22, 1959) is a scholar of organization and management.
 He has played a leading role in organizing a joint platform of all business schools in Pakistan as founding chairman of Association Management of Development Institutions of Pakistan (AMDIP) from 2002 to 2006.
 AMDIP is a constituent body of Association of Management Development Institutions of South Asia (AMDISA), a SAARC body based in Hyderabad, India.
 Murad is a member of the Executive Board of AMDISA.
 He has been part of the group formed to develop South Asian Quality Assurance System.
 He has also been member of the executive board of Asia Academy of Management, Hong Kong, an offshoot of Academy of Management, USA.
 Murad was founding secretary general of International Business Forum, a global networking platform of management and business professionals having headquarters in Istanbul, Turkey.
 He has been pioneering member of the core group constituted for Globally Responsible Leadership Initiative organized under European Foundation of Management, Brussels, in collaboration with Global Compact of United Nations.
 He is member of the Senate of University of Veterinary and Agricultural Sciences.
 He was dean of the Institute of Leadership and management from 1995 to 2000 and is currently serving as rector of the University of Management and Technology, Lahore.
 He earned a bachelor's degree in civil engineering from NED University, Karachi, an MBA from Washington State University, and PhD from University of Wales, UK.
 He was the director general of Institute of Leadership and Management from 1992 to 1999.
 He is the founder member of board of Tricast media, an international mobile software technology enterprise, founder member of Board of ILM Trust since its inception in 1990, chairman of ILM Colleges and The Knowledge School network.
 Murad was recently appointed as the chairman of National Business Education Accreditation-council (NBEAC) legislature of Higher Education Commission (HEC) Government of Pakistan.
D.Holic (Hangul: 디홀릭) was a South Korean girl group formed by Star Road Entertainment (formerly H.Mate Entertainment) in 2014 with five members.
 Nine left the group in August 2015, due to personal reasons, and was replaced by new member, Hwajung.
 In July 2016, it was revealed through teasers that Danbee and Duri had decided to leave the group, new member, EJ, was added to the line-up.
 In February 2017, it was confirmed through a performance that members Hami and Hwajung had departed from the group.
 They were temporary replaced with new members, Nayoung and Youjin, although they never officially made their debut.
 In July 2017, EJ announced that she would be leaving the group to pursue a modelling career.
 The group informally disbanded after the departure of all but one member, with the aim of re-debuting the remaining member, Rena, into a new girl group within a year.
 The group has released one mini-album: "Chewy" (2015) and three single albums: "D.Holic Dark With Dignity" (2014), "Murphy & Sally" (2015), and "Color Me Rad" (2016).
The Western European and Others Group (WEOG) is one of five unofficial Regional Groups in the United Nations that act as voting blocs and negotiation forums.
 Regional voting blocs were formed in 1961 to encourage voting to various UN bodies from regional groups.
 As of 2010, there are 28 member states, plus one observer.
 Almost all members are in Western Europe, but the WEOG is unusual in that geography is not the sole defining factor; Europe is divided between the WEOG and the Eastern European Group, and the WEOG also contains Canada, Australia, New Zealand, which are culturally and politically descended from Western European states but are located far away from them.
 Israel is also a permanent member, due to its strong cultural and historical links with Western Europe and its inability to join the Asian Group due to opposition by Arab countries.
 The group also contains one observer, the United States, which has voluntarily chosen not to participate as a member, and attends meetings as an observer only.
 However, it is considered to be a member for putting forward candidates for electoral purposes in the United Nations General Assembly.
 Turkey participates fully in both the WEOG and the Asian Group, but for electoral purposes is considered a member of the WEOG only.
Play was a Swedish pop girl group consisting of, in total, seven young women.
 Faye Hamlin, Anna Sundstrand, Anaïs Lameche, and Rosie Munter formed Play's original line-up from the band's formation from 2001 until late 2003.
 After founding member Faye left the group, fifth member Janet Leon joined Play to fill Hamlin's position as lead singer.
 In 2005, the group officially announced an "indefinite break" and split up.
 At that time, Play had sold almost one million albums.
 Four years later, in 2009, the group reformed with a new line-up of three members consisting of Anaïs, Faye, and the sixth and oldest member of Play, Sanne Karlsson.
 In February 2011, an official statement was made that Faye had once again left the group in 2010 and would be replaced by Emelie Norenberg.
 It was announced in May 2011 that the band had separated for the second time.
Mark Middleton is a member of the RandB group Blackstreet, born c. 1969 in Brooklyn, New York and raised in South Carolina.
 Middleton grew up in the church and began singing at an early age.
 His musical influences included Stevie Wonder and Donny Hathaway.
 He left Blackstreet in 1998 after a dispute with the group's co-founder and leader Teddy Riley.
 He returned to the group in 2001 after his solo album was shelved.
 Middleton along with Riley, Hannibal, and Williams were working on a Blackstreet reunion as of 2008 and the group expanded the group from a quartet to a quintet by adding original lead singer Dave Hollister back in the fold but Riley has decided to move on without Middleton and Williams and added new member Sherman "J-Stylz" Tisdale in place of Mark.
 He and Eric Williams have formed their own group with Englewood, New Jersey singer Jeremy "Remy" Hanna.
 Mark and Eric have reunited with original member Chauncey Black also Levi Little under Blackstreet because Teddy formed a Blackstreet 2nd Generation group BS2 with Dave Hollister and three new members called BS2.
The Alabama Independent School Association was formed in 1966 by a group of schools known as the Alabama Private School Association.
 Originally a group of eight segregation academies, the membership grew to 60 by the 1971–72 school year.
 In 1990, the group voted to change its name to the Alabama Independent School Association to better reflect the demographics, mission and vision of the association.
 Today, the AISA serves 70 member schools.
 Most member schools are located in the state of Alabama, but one member school is located in Meridian, MS and one affiliate member is located in Smyrna, TN The mission of the AISA is to serve independent schools in the state of Alabama by providing its member schools with educational and corporate services and programs focusing on excellence in academics, accreditation, and athletics