Question: Ning Zetao, is a Chinese competitive swimmer, at the 2014 Asian Games, held in which country, he won multiple gold medals?

full_context: Document 1: Shen Duo: 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.
Document 2: Football at the 2014 Asian Games: Football at the 2014 Asian Games was held in Incheon, South Korea from September 14 to October 3, 2014. The opening match was played 5 days prior to the opening ceremony. In this tournament, 29 teams are playing in the men's competition, and 11 teams are participating in the women's competition.
Document 3: Cricket at the 2014 Asian Games: Cricket was one of the 36 sports at 2014 Asian Games held in Incheon, South Korea from 20 September – 3 October 2014. Both Men's and Women's tournaments were held in the event. Top Asian associate members and full members took part at the 2014 Asian Games. The matches were played under Twenty20 format.
Document 4: Zhang Yufei (swimmer): 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.
Document 5: Sun Yang: Sun Yang (; ; born 1 December 1991) is a Chinese Olympic and world-record-holding competitive swimmer. In 2012, he became the first Chinese man to win an Olympic gold medal in swimming. Sun is the first male swimmer in history to earn Olympic and World Championship gold medals at every freestyle distance from 200 metres to 1500 metres. A three-time Olympic gold medalist and nine-time world champion, he is also the most decorated Chinese swimmer in history. "NBC Sports" described Sun as "very arguably the greatest freestyle swimmer of all time."
Document 6: Park Tae-hwan: 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.
Document 7: Chen Yi (swimmer): Chen Yi (born February 10, 2001) is a Chinese swimmer. She won a gold medal at the Mixed 4x50meter freestyle relay-20 Points event at the 2016 Summer Paralympics, where she swam in the heats (with a time of 28.91) but not in the final race, where the team won with 2:18.03. She also won a silver medal at the Women's 100 metre Butterfly S10 event with 1:06.92 a bronze medal at the Women's 50m Freestyle S10 event with 28.21 and another bronze medal at the Women's 4x100m Freestyle Relay - 34 Points event with a personal time of 1:02.16 and a total team time of 4:24.22.
Document 8: Football at the 2014 Asian Games – Men: The men's football tournament at the 2014 Asian Games was held in Incheon and three other cities in South Korea from September 14 to October 3, 2014. The opening match was played 5 days prior to the opening ceremony. In this tournament, 29 teams played in the men's competition.
Document 9: Ning Zetao: 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.
Document 10: Handball at the 2014 Asian Games: Handball at the 2014 Asian Games was held in Incheon, South korea from September 20 to October 2, 2014. In this tournament, 14 teams played in the men's competition, and 9 teams participated in the women's competition.
Document 11: Table tennis at the 2014 Asian Games: Table tennis at the 2014 Asian Games was held in Suwon, South Korea from September 27–October 4, 2014. Two team events and five individual events were held at Suwon Gymnasium after the preliminary round of women's handball finished on September 25.
Document 12: Basketball at the 2014 Asian Games – Men: The men's tournament of the 2014 Asian Games Basketball Competition was held from September 20 to October 3, 2014 in Incheon, South Korea. China was the defending Gold medal winners of the competition in 2010, which they won in their home soil. South Korea emulated that feat by winning the Gold Medal in Incheon in 2014. Iran and Japan completed the podium by winning the Silver and Bronze medals, respectively. Games of the tournament were held at the 7,406 seat Samsan World Gymnasium, and the 5,158 seat Hwaseong Sports Complex.
Document 13: Swimming at the 2014 Asian Games: 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.
Document 14: Li Zhuhao: 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.
Document 15: Yannick Agnel: Yannick Agnel (born 9 June 1992) is a French former competitive swimmer who specializes in freestyle events, and is a three-time Olympic medalist. In his Olympic debut at the 2012 Summer Olympics in London, he won gold in the 200-meter freestyle, gold in the 4×100-meter freestyle relay, and silver in the 4×200-meter freestyle relay. He is the current world record holder in the 400-meter freestyle (short course), the European record holder in the 800-meter freestyle (short course), and the national record holder in the 200- and 400-meter freestyle (long course).
ground_truth: South Korea