Question: The song "Gashina" was recorded by a South Korea singer that was a member of what group in 2007?
Context: 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. Lee Sun-mi (born May 2, 1992), referred to as Sunmi, is a South Korean singer.  She debuted in 2007 as a member of South Korean girl group Wonder Girls and left from the group in January 2010 to pursue her academic career. Pakistan–South Korea relations refers to bilateral diplomatic relationship between Pakistan and South Korea.  Since the 1980s, the relations between two Asian states have been improved and periodically enhanced.  Pakistan has an embassy in Seoul, South Korea, and South Korea has an embassy in Islamabad, Pakistan.  South Korea is also member of Friends of Democratic Pakistan. Inter-Korean summits (In North Korea: 북남수뇌상봉 "North-South Leader Meeting"; in South Korea: 남북정상회담 "South-North Summit Talks") are meetings between the leaders of North Korea and South Korea.  There have been two major meetings, the first in 2000 and the second in 2007.  The importance of these summits lies in the lack of formal communication between North and South Korea, which makes discussing political and economic issues difficult.  The summits' agendas have included topics such as the ending of the 1953 war (currently there is an in force), the massive deployment of troops at the DMZ (approximately two million in total), the development of nuclear weapons by North Korea and human rights issues. 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". Breathe (Korean: 브리드) is a song recorded by the South Korea singer G-Dragon, released as the second single off from his debut album.  While the single did not chart as strongly as its predecessor, it manage to chart within the Top 20 for the artist. Lee Soon-kyu (born May 15, 1989), known professionally as Sunny, is an American singer and actress currently based in South Korea.  She debuted as a member of girl group Girls' Generation 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.  Apart from her group's activities, Sunny has participated in numerous side projects including original soundtracks, television variety shows, musical acting and radio hosting. Choi Soo-young (born February 10, 1990), better known by the mononym Sooyoung, is a South Korean singer and actress.  She was a part of the short-lived Korean-Japanese singing duo, Route θ, during 2002 in Japan.  After returning to South Korea in 2004, Sooyoung eventually became a member of girl group Girls' Generation in 2007.  The group went on to be one of the best-selling artists in South Korea and one of South Korea's most popular girl groups worldwide.  Apart from her group's activities, Sooyoung has also starred in various television dramas such as "The 3rd Hospital" (2012), "" (2013), "My Spring Days" (2014) and "38 Revenue Collection Unit" (2016). Korea Cricket Association is the official governing body of the sport of cricket in South Korea.  Its current headquarters is located in Seoul, South Korea.  Korea Cricket Association is South Korea's representative at the International Cricket Council and is an affiliate member and has been a member of that body since 2001.  It is also a member of the East Asia-Pacific Cricket Council. "Gashina" () is a song recorded by South Korean singer Sunmi.  It was released as a CD and digital single by MakeUs Entertainment and The Black Label on August 22, 2017, distributed by LOEN Entertainment.  "Gashina" is Sunmi's first release since the disbandment of Wonder Girls and the expiration of her contract with JYP Entertainment.
Answer: Wonder Girls