Question: Ning Zetao, is a Chinese competitive swimmer, at the 2014 Asian Games, held in which country, he won multiple gold medals?
Context: Park Tae-hwan (Korean: 박태환, ] ; born September 27, 1989) is a South Korean competitive swimmer who is an Olympic gold medalist and world champion.  He has four Olympic medals, five world titles, and 20 Asian Games medals.  He won a gold medal in the 400-meter freestyle and a silver in the 200-meter freestyle events at the 2008 Summer Olympics.  He also won two silver medals at the 2012 Summer Olympics in the 200- and 400-meter freestyle.  He is the first Asian swimmer to claim a gold medal in the men's 400-meter freestyle, and the first-ever South Korean swimmer to win any Olympic medal in swimming.  He also holds 3 Asian Records, all in Men's Freestyle.  He is best known for his impressive range and versatility, as he is able to compete at international level in 100-, 200-, 400- and 1,500-meter freestyle. Swimming at the 2014 Asian Games was held at the Munhak Park Tae-hwan Aquatics Center in Incheon, South Korea from September 21 to 26, 2014.  This Aquatics discipline had 38 long course events: 19 for males and 19 for females. Michael Fred Phelps II (born June 30, 1985) is an American former competitive swimmer and the most decorated Olympian of all time, with a total of 28 medals.  Phelps also holds the all-time records for Olympic gold medals (23), Olympic gold medals in individual events (13), and Olympic medals in individual events (16).  In winning eight gold medals at the 2008 Beijing Games, Phelps broke fellow American swimmer Mark Spitz's 1972 record of seven first-place finishes at any single Olympic Games.  At the 2004 Summer Olympics in Athens, Phelps had already tied the record of eight medals of any color at a single Games by winning six gold and two bronze medals.  At the 2012 Summer Olympics in London, Phelps won four gold and two silver medals, and at the 2016 Summer Olympics in Rio de Janeiro, he won five gold medals and one silver.  This made him the most successful athlete of the Games for the fourth Olympics in a row. Ning Zetao ( or "Níng Zétāo"; or ; born 6 March 1993) is a Chinese competitive swimmer.  Specializing in the freestyle, he won a gold medal in the 100 metre freestyle at the 2015 World Championships.  At the 2014 Asian Games, he won gold medals in the 50 metre freestyle, 4 × 100 metre medley relay, 4 × 100 metre freestyle relay, and 100 metre freestyle, breaking the Asian records in the latter two events.  Ning also swam for China at the 2016 Summer Olympics. Shen Duo (; born 9 June 1997) is a Chinese competitive swimmer who specializes in sprint freestyle events.  Considered one of the most promising swimmers in the international scene, she currently holds three world junior records each in the 100 m freestyle, the 400 m medley relay, and the mixed 400 m freestyle relay, and also pocketed a total of nine gold medals to her career hardware in two major meets at the peak of 2014 season. Kenta Hirai (born May 7, 1994) is a Japanese competitive swimmer who won the silver medal in the 200 meter butterfly at the 2014 Asian Games.  He also won the silver medal in the 200 meter butterfly at the 2013 Summer Universiade, and the gold medal in the same event at the 2011 FINA World Junior Swimming Championships.  He also has an additional 2 silver medals, both won at the 2001 Junior World Championships, in the 100 meter butterfly and the 4x100 meter medley relay.  He has won a total of 5 international medals, with 1 gold and 4 silver. Bi Yirong is a Chinese competitive swimmer who won the gold medal in the 800 meter freestyle at the 2014 Asian Games.  She also won a silver medal in 400 meter freestyle there.  She specializes in freestyle.  In 2016, she joined the University of Michigan swim team.  She has produced a total of two international medals, one gold and one silver, both in the 2014 Asian Games. Shi Jinglin (; born 3 January 1993) is a Chinese competitive swimmer who specializes in the breaststroke events.  She has produced a tally of five medals, two golds and three bronze, in major international competition, spanning the Olympic Games, Asian Games, and World Championships.  At the 2014 Asian Games, Shi broke a meet record to claim the gold medal in the 100 m breaststroke. Zhang Yufei (; born 19 April 1998) is a Chinese competitive swimmer who specializes in sprint freestyle and butterfly events.  Considered one of the most promising swimmers in the international scene, she currently holds a world junior record in the 200 m butterfly, and also produced a tally of seven medals (three golds, two silver, and two bronze) in her swimming career, spanning the Youth Olympics, Asian Games, and the World Championships. Li Zhuhao (born January 9, 1999) is a Chinese competitive swimmer, specializing in butterfly.  At the 2014 Asian Games, he won the silver medal in the 100 metre butterfly and the gold medal in the 4 × 100 m medley relay, setting the Asian Games record.
Answer: South Korea