Question: Was the 9th FINA Swimming World Championships (25 m) held in an indoor or outdoor arena?

full_context: Document 1: Major achievements in swimming by nation: This is a list of the best results achieved by athletes from different nations at four major competitions where swimming events are (or were) competed. Results are based on major competitions according to FINA's historical records: the swimming and open water swimming events at the Olympic Games, the swimming and open water swimming events at the FINA World Aquatics Championships, the FINA Short Course Swimming World Championships and the defunct FINA World Open Water Swimming Championships. The results listed here only refer to swimming and open water swimming events. Medals earned by athletes from defunct NOCs or historical teams have been merged with the results achieved by their immediate successor states, as follows: Russia inherits medals from the Soviet Union and the Unified Team; Serbia inherits medals from Yugoslavia; Australia inherits medals from Australasia; and Germany inherits medals from West Germany and East Germany. The table is pre-sorted by total number of gold medal results, silver medal results and bronze medal results, respectively. When equal ranks are given, countries are listed in alphabetical order.
Document 2: 2008–09 Premier League: The 2008–09 Premier League (known as the Barclays Premier League for sponsorship reasons) season was the 17th season since the establishment of the Premier League in 1992. Manchester United became champions for the 11th time on the penultimate weekend of the season, defending their crown after winning their tenth Premier League title on the final day of the previous season. They were run close by Liverpool, who had a better goal difference and who had beaten United home and away, including a dramatic 4–1 victory at Old Trafford, but who were undone by a series of disappointing draws. The campaign – the fixtures for which were announced on 16 June 2008 – began on Saturday, 16 August 2008, and ended on 24 May 2009. A total of 20 teams contested the league, consisting of 17 who competed the previous season and three promoted from the Football League Championship. The new match ball was the Nike T90 Omni.
Document 3: 1998 World Aquatics Championships: The 8th FINA World Championships or the 1998 World Aquatics Championships were held from 8 to 17 January 1998 in Perth, Australia. The championships features competition in all five of FINA's disciplines: Swimming, Diving, Water Polo, Synchronized Swimming and Open Water Swimming. The main venue for competition was Challenge Stadium, which hosted all disciplines save Open Water.
Document 4: Arena Birmingham: Arena Birmingham (previously known as The Barclaycard Arena and the National Indoor Arena) is an indoor sporting and entertainment venue in Birmingham, United Kingdom. The Arena, which is owned by parent company, the NEC Group, is situated in central Birmingham. When it was opened in 1991, it was the largest indoor arena in the UK.
Document 5: Manchester Arena: The Manchester Arena is an indoor arena in Manchester, England, immediately north of the city centre and partly above Manchester Victoria station in air rights space.
Document 6: Spinningfields: Spinningfields is an area of Manchester city centre, in North West England. It was specially developed in the 2000s as a business, retail and residential development of Manchester, and is located between Deansgate and the River Irwell. Developed by Allied London Properties, the £1.5 billion project consists of 20 new buildings, totalling approximately 430,000 sq metres of commercial, residential and retail space. It takes its name from Spinningfield, a narrow street which ran westwards from Deansgate. In 1968 Spinningfield and the area to the south were turned into Spinningfield Square, an open paved area. The Manchester Civil Justice Centre is a landmark building of the scheme and construction commenced on 1 Spinningfields, a 90-metre office building, in early 2015.
Document 7: Royal Exchange, Manchester: The Royal Exchange is a grade II listed building in Manchester, England. It is located in the city centre on the land bounded by St Ann's Square, Exchange Street, Market Street, Cross Street and Old Bank Street. The complex includes the Royal Exchange Theatre and the Royal Exchange Shopping Centre.
Document 8: Manchester Central Mosque: Manchester Central Mosque and Islamic Cultural Centre (also known as “Victoria Park Mosque”) is a mosque in Manchester, England. Sometimes referred to as Jamia Mosque, it is situated in the middle of Victoria Park, Manchester close to the Curry Mile. It plays a key role in Manchester's Muslim community. Imam and Khateeb Muhammad Arshad Misbahi and Qari Hafiz Javed Akhtar are leaders of the mosque. Qari Javed also leads taraweeh prayers in ramadan.
Document 9: 2001–02 FINA Swimming World Cup: The 2001–2002 FINA Swimming World Cup was a series of nine international short course (25m) swimming meets organized by FINA. The meets were held in nine different cities, from November 2001 through January 2002. Each featured 34 events: seventeen for males and seventeen for females.
Document 10: City of Manchester Stadium: The City of Manchester Stadium in Manchester, England, also known as the Etihad Stadium for sponsorship reasons, is the home ground of Manchester City Football Club and, with a domestic football capacity of 55,097, the fourth-largest in the Premier League and eighth-largest in the United Kingdom.
Document 11: 2017 Manchester Arena bombing: The 2017 Manchester Arena bombing was an Islamic terrorist attack in Manchester, United Kingdom. On 22 May 2017 a shrapnel-laden homemade bomb was detonated as people were leaving Manchester Arena following a concert by the American singer Ariana Grande. Twenty-three people were killed, including the attacker, and 250 were injured.
Document 12: 2008 Mosconi Cup: The 2008 Mosconi Cup, the 15th edition of the annual nine-ball pool competition between teams representing Europe and the United States, took place 11–14 December 2008 at the Hilton Conference Center in Portomaso, Malta.
Document 13: 2002–03 FINA Swimming World Cup: The 2002–2003 FINA Swimming World Cup was a series of nine, international short course (25m) swimming meets organized by FINA. The meets were held in seven different cities, from November 2002 through January 2003. Each featured 34 events: 17 for males, 17 for females.
Document 14: FINA Swimming World Cup: The FINA Swimming World Cup is an international series of short course (25 m) swimming meets organized by FINA, the International Federation for swimming. The series was started in the 1988/1989, and is open to swimmers from FINA member countries. For the 2015 edition, the series were held in long course pools instead of short course. The series has traditionally been held in the northern hemisphere's winter-time (October–February range), placing it within the normal short course competition times for many countries (with long course competition predominating in the northern hemisphere's summer months).
Document 15: 2008 FINA World Swimming Championships (25 m): The 9th FINA Swimming World Championships (25 m) were held at the Manchester Arena, in Manchester, United Kingdom 9-13 April 2008.
ground_truth: an indoor arena