Question: In 2013, Yousef Al-Nehmi competed in the 50 m butterfly event at what gaming event, located in Incheon, South Korea?

Context articles: Yousef Al-Nehmi
Dinko Jukić
Incheon Transit Corporation
Tolga Akcayli
Wladimir Ribeiro
Yousef Al-Askari
Pyotr Skripchenkov
Incheon Korean Music Wave
2013 Asian Indoor and Martial Arts Games
Madeline Groves

Yousef Al-Nehmi, (born 1993) is a Yemeni swimmer.
 He competed in the 50 m freestyle and 50 m butterfly events at the 2010 Asian Games and in the 50 m butterfly event at the 2013 Asian Indoor and Martial Arts Games.
 Al-Nehmi also took part in the 50 m freestyle and 50 m butterfly events at the 2013 World Aquatics Championships.
Dinko Jukić (born January 9, 1989 in Dubrovnik) is a medley and butterfly swimmer from Austria of Croatian origin.
 He competed for Austria at the 2008 Summer Olympics in Beijing, China, finishing in tenth place in the men's 200 m butterfly event.
 At the 2012 Summer Olympics in London he managed a 4th-place finish in the men's 200 m butterfly event.
 Despite setting a new National Record of 1:54.35 in the final he missed the Bronze medal by more than a second.
 He is the younger brother of swimmer Mirna Jukić.
 From 2012 suffering a back injury, Dinko came back after 2 years break, posting a new national record 100 Freestyle (Jan.2015).
 He is still in training waiting to reach his former level.
Incheon Transit Corporation currently operates the Incheon Subway, Wolmi Galaxy Rail, Incheon Bus information, Incheon Bus Terminal, Call taxi for the handicapped in Incheon, South Korea, established in 1993.
 In 2011 Incheon Transit Corporation merged with ′Incheon Metro′, established in 1998 to operate Incheon Subway Line 1 and Incheon Airport Maglev.
 In the future it also has plans to operate Line 2 as well as Line 3.
Tolga Akcayli (born 15 April 1993 in United Kingdom) is British - Saint Vincent and the Grenadines swimmer of Turkish descent, specializing in freestyle.
 He competed in the 2011 Pan American Games and the 2011 World Aquatics Championships where he was eliminated in the first round of both tournaments, including the 50m butterfly event at the Championships.
 Akcayli also competed in the 50 m event at the 2012 Summer Olympics but was eliminated in the first round and ranked 45th.
 Akcayli got married to Dr. Julia Reymann on 20 July 2016 at his current residence in the Bahamas.
 He is now developing a free to use online marketplace for the Bahamas called we242.com.
Vladimir Ribeiro (born June 17, 1967) is a former international butterfly and backstroke swimmer from Brazil, who participated for his native South American country at the 1988 Summer Olympics in Seoul, South Korea.
 There his best finish was the 32nd place in the men's 100-metre butterfly event.
Yousef Al-Askari (born 25 March 1994) is a Kuwaiti swimmer.
 He competed in the 200 m butterfly event at the 2012 Summer Olympics and was eliminated during the heats.
Pyotr Grigoryevich Skripchenkov (Russian: Пётр Григорьевич Скрипченков ; 14 February 1926 – 2010) competed in the period when butterfly was being split from breaststroke as a separate swimming style, and Skripchenkov was one of the first Soviet swimmers who mastered the butterfly.
 In 1952, he took part in the Summer Olympics in the 200 m breaststroke, when butterfly was not an Olympic event yet.
 In 1953–1954 he swam the butterfly leg in the 4 × 100 m medley relay and helped the Soviet team to set three world records.
 Between 1949 and 1954 he won two national titles and set five national records.
 He later competed in the masters category, mostly in the 50 m butterfly event, in which he won the world championships in 1990 and several national titles.
The Incheon Korean Music Wave is an annual music festival held at the Incheon Munhak Stadium in Incheon, South Korea and broadcast on MBC.
 The event is organized by HH Company and features South Korea's top artists.
The 4th Asian Indoor and Martial Arts Games, which is also counted as the 4th Asian Indoor Games and designated as AIGs 4, was held in Incheon, South Korea, from 29 June to 6 July 2013, despite the ongoing 2013 Korean crisis.
 It was initially slated for Doha, Qatar, after the country cancelled the last edition of Asian Indoor Games in 2011.
 However, Incheon was chosen as a replacement instead by the OCA.
 This event also acted as a test event and a prelude to the 2014 Asian Games.
Madeline Groves (born 25 May 1995) is an Australian competitive swimmer.
 She was the Australian national champion in the 200 m butterfly event in 2013, 2014, 2015 and 2016.
 At the 2014 Commonwealth Games she was a bronze medallist in the 200 m butterfly event, and swam in the heats for the gold medal-winning Australian freestyle relay team.
 She was selected to represent Australia in the 100 m and 200 m butterfly, and 4 × 200 m freestyle relay events at the 2016 Summer Olympics in Rio de Janeiro.