Question: Where is the multi-purpose stadium which 2019 World Championships in Athletics is to be held located 

Context paragraphs:
Ullevi: Ullevi, sometimes known as Nya Ullevi (] , "New Ullevi"), is a multi-purpose stadium in Gothenburg, Sweden.  It was built for the 1958 FIFA World Cup, but since then has also hosted the World Allround Speed Skating Championships six times; the 1995 World Championships in Athletics and the 2006 European Athletics Championships; the UEFA Cup Winners' Cup finals in 1983 and 1990; the UEFA Euro 1992 final, the UEFA Cup final in 2004; and annually hosted the opening ceremony of the Gothia Cup, the world's largest football tournament in terms of the number of participants.  IFK Göteborg has also played two UEFA Cup finals at the stadium, in 1982 and 1987, but then as "home game" in a home and away final.  The stadium hosted several events, including football, ice hockey, boxing, racing, athletics and concerts.

World Para Athletics Championships: The World Para Athletics Championships, known as the IPC Athletics World Championships prior to 2017, are a biennial Paralympic athletics event organized by World Para Athletics, a subcommittee of the International Paralympic Committee (IPC).  It features athletics events contested by athletes with physical and intellectual disabilities.  The first IPC Athletics World Championships were held in Berlin, Germany in 1994.

Teufaiva Sport Stadium: Teufaiva Sport Stadium which was previously known as "Tenefaira Field Stadium" is a multi-purpose stadium in Nukuʻ alofa, Tonga.  It is used mostly for rugby union, football and rugby league and the Ikale Tahi team matches.  The stadium holds 10,000 people.  It is the home ground of the Tonga national football team.  Teufaiva is where the Secondary School sports in Tonga are held (every year).  Also, in 2019, Tonga will be hosting the Pacific Games there.  In January 2015, it was announced that the stadium would undergo a reconstruction to prepare for the 2019 Pacific Games.

Khalifa International Stadium: Khalifa International Stadium (Arabic: ملعب خليفة الدولي‎ ‎ ) also known as National Stadium is a multi-purpose stadium in Doha, Qatar as part of the Doha Sports City complex, which also includes Aspire Academy, Hamad Aquatic Centre, and the Aspire Tower.  It is named after Khalifa bin Hamad Al Thani, Qatar's former Emir.  The final of 2011 AFC Asian Cup was held at this stadium.

British Championships in Athletics: The British Championships in Athletics is the premier national championship in track and field athletics held in the United Kingdom, and are organised by British Athletics.  The event has doubled as the main trials for the major international outdoor athletics meets in which Great Britain and Northern Ireland compete, including the Olympic Games, the IAAF World Championships in Athletics and the European Athletics Championships.  A meeting under the name of the UK National Championships was first held in 1977, but the Championships took its modern shape in 2007, and its modern name in 2012.

2019 World Championships in Athletics: The seventeenth edition of the IAAF World Championships is scheduled to be held in 2019 in Doha, Qatar at the renovated Khalifa International Stadium, a 48,000 -seat multi-purpose stadium.

Kalinga Stadium: The Kalinga Stadium is a multi-purpose stadium in Bhubaneswar, Odisha, India.  foundation stone laid by Biju Patnaik in 1978, it has facilities for athletics, soccer, field hockey, basketball, tennis, table tennis and swimming.  Other features of the stadium includes an 8-lane synthetic athletics track, a sports hostel, gymnasium and the India's first newly built olympic standard pink and blue hockey turf.  Kalinga Stadium serves as the home ground for Hockey India League franchise, Kalinga Lancers and I-League 2nd Division franchise, Samaleswari Sporting Club.  The Stadium hosted the 22nd Asian Athletics Championships from 6th July to 9th July, 2017.

2019 World Aquatics Championships: The 2019 World Aquatics Championships — 18th FINA World Aquatics Championships will be held in Gwangju, South Korea in the summer of 2019.  The city has hosted the 2015 Summer Universiade aquatics events in the same venues.

2019 World Para Athletics Championships: The 2019 World Para Athletics Championships is an upcoming Paralympic track and field meet organized by the World Para Athletics subcommittee of the International Paralympic Committee.  It is the 9th edition of the event, formerly known as the IPC Athletics World Championship prior to 2017.

2015 IPC Athletics World Championships: The 2015 IPC Athletics World Championships were a Paralympic track and field meet organized by the World Para Athletics subcommittee of the International Paralympic Committee, the 7th edition of the IPC Athletics World Championships, held from 21 to 31 October 2015 at the Suheim Bin Hamad Stadium in Doha, Qatar.  It featured 119 men's events and 91 women's events.  The Marathon events which are traditionally part of the world championships were separated from the competition and instead held on 26 April as part of the London Marathon.

Supporting paragraphs: 2019 World Championships in Athletics Khalifa International Stadium
Answer: Doha, Qatar