Stetsasonic was an American hip hop group formed in 1981 in Brooklyn, New York City, New York.
 It is remembered as one of the first hip hop crews to use a live band, and the group's positive, uplifting lyrics made it forerunners of alternative hip hop and jazz hip hop.
Optimus Rhyme was a hip hop group from Seattle, Washington.
 Optimus Rhyme is most widely considered a nerdcore hip hop group because of the nerdy nature of their lyrics.
 The name of the band as well as the stage names of the members and a majority of their lyrics refer to the Transformers franchise.
 Their music is a combination of rapped hip hop lyrics with funk rock music.
 Optimus Rhyme formed in Seattle in 2001.
Orishas are a Cuban hip hop group from Havana, Cuba, founded in 1999.
 The group was first called ""Amenaza"", ""threat"" or ""menace"" in Spanish, and appealed to the Cuban youth who were hungry for African-American culture consisting of hip hop and rap.
 Orishas delved into a realm of music and that they created a black identity to which some among the younger generations could relate.
 The group is based in France where they made a deal with a record company, although they visit Cuba frequently.
 In 1999 Fidel Castro threw a party for them and had a meeting with all the musicians.
 It was the first time the Cuban government showed support for hip hop music.
 The group was and still is popular in Europe (especially France, Spain and Portugal) and Latin America.
 Yotuel Romero and Ruzzo Medina, who moved from Havana to Paris as part of an international studies program, joined Roldán González and Flaco-Pro to form the band in 1999.
 Their work is influenced by the hip hop movement as well as Cuban and other Latin rhythms.
 s of 2009 , they had produced a total of four studio albums and a greatest hits album; their latest album is Cosita Buena (released June 17, 2008).
 In 2009 they participated in the concert Paz Sin Fronteras II in Plaza de la Revolución, Havana, Cuba.
 Orishas reunited to record new material in 2016.
Jason C. Medeiros better known as Mr. J. Medeiros, is an American Rapper, Record Producer, and Songwriter.
 As well as releasing music under the name, Mr. J. Medeiros, he is responsible for forming the Hip Hop group The Procussions, is one half of the Hip Hop/Electronic duo AllttA, and the lead singer of Punk-Rap group KNIVES.
 He is of Portuguese and Scottish descent.
 Mr. J. has written music with such artists as, Monte Nueble, Noel Zancanella, Randy Jackson, Marty James, Shad (rapper), George "Spanky" McCurdy, Symbolyc One (S1), Illmind, Benny Cassette, Talib Kweli, 20Syl and French hip hop group Hocus Pocus (group) and more famous C2C.
Lecrae is an American Christian hip hop artist.
 His career began in 2004 when he and Ben Washer co-founded the record label Reach Records.
 In 2007 his first album, "Real Talk" (2005)"," received a nomination at the Stellar Awards and his second album, "After the Music Stops" (2007), was nominated at the GMA Dove Awards.
 The following year Lecrae's third album, "Rebel", became the first Christian hip hop album to chart at number one on the U.S. "Billboard" Gospel Albums Chart.
 In 2011 his fourth album, "Rehab" (2010), received a Grammy nomination for Best Rock Gospel Album.
 That year Lecrae began achieving mainstream success and recognition after he collaborated with DJ Statik Selektah on the song "Live & Let Live" and performed at the 2011 BET Hip Hop Awards Cypher.
 The following year he garnered two GMA Dove awards: Rap/Hip Hop Album of the Year for "" (2011) and Rap/Hip Hop Recorded Song of the Year for "Hallelujah" (2011).
 He also released the mixtape "Church Clothes" and the studio album "Gravity", the latter of which of has been called the most important album in Christian hip hop history by Rapzilla and "Atlanta Daily World".
Sindicato Argentino del Hip Hop is a hip hop group formed in Argentina.
 They currently consist of three members: Smoler, DJ Fabry and Huexo , and two producers, but they have had different numbers of members over time .
 Their style mainly consists of hip hop and funk.
 The group received a Latin Grammy award in 2001 for best hip hop/rap album.
Hilltop Hoods are an Australian hip hop group that formed in 1994 in Blackwood, Adelaide, South Australia.
 The group was founded by Suffa (Matthew David Lambert) and MC Pressure (Daniel Howe Smith), who were joined by DJ Debris (Barry John M. Francis) after fellow founder, DJ Next (Ben John Hare), left in 1999.
 The group released its first extended play, "Back Once Again", in 1997 and have subsequently released seven studio albums, two "restrung" albums and three DVDs.
"Cosby Sweater" is a song by Australian hip hop group, Hilltop Hoods.
 It was released as the third single from the group's seventh studio album, "Walking Under Stars" (2014).
 In Australia, "Cosby Sweater" peaked at No. 4 on the Australian ARIA Singles Chart, becoming Hilltop Hoods' highest charting single to date and their third top ten hit overall.
 The song was rated number three in Triple J's Hottest 100 2014.
 The song's accompanying music video was released on 3 October 2014 via the Australian iTunes Store.
Serbian hip hop refers to all genres of hip hop music in the Serbian language.
 The term is also sometimes used to refer to any hip hop music made by Serbs, including instrumental hip hop, as well as rap songs by members of the Serbian diaspora, often in languages other than Serbian.
 Beogradski Sindikat is considered to be the greatest Serbian hip hop group, along with others like VIP, Sunshine, CYA.
 The most popular solo artists are Skabo, Ikac, Reksona, Juice, Gru, Struka, Ajs Nigrutin, Marchelo, etc.
Uptown 3000 was a Korean American hip hop duo on the record label The Machine Group CEO Alvin & Calvin Waters which consisted of Carlos Galvan aka "Cali-Mexci" and Steve Kim aka "Kwon".
 The duo was a spinoff of Uptown, a Korean hip hop group which was active in the late 1990s whose sales reached 6 million.
 The duo is considered defunct as the original Uptown made its comeback in Korea in 2006, which Kim and Galvan were a part of.
 The group has been credited with being the first Korean hip hop group to closely resemble anything similar to American style hip hop.

Question: In what year was the hip hop group who did "Cosby Sweater" formed?
Answer: 1994