Question:  Sir William Ewart Bell  was the president of a managing rugby union that has it's home ground at which stadium ?

Context paragraphs:
Willows Sports Complex: The Willows Sports Complex, currently known as 1300SMILES Stadium through sponsorship, is a grass football stadium situated in Townsville, Queensland, Australia.  It has been a predominantly rugby league ground as the home ground of the North Queensland Cowboys National Rugby League club.  The ground has also been used for rugby union and soccer.  From 2009 to 2011, A-League football club North Queensland Fury called it home.  Since inception as a rugby league ground, the ground has had sponsored naming rights: Stockland Stadium (1995–97), Malanda Stadium (1998) and Dairy Farmers Stadium (1999–2013).

Rectory Field: Rectory Field is a sports ground in Blackheath in the Royal Borough of Greenwich in south-east London.  It was developed in the 1880s by Blackheath Cricket, Football and Lawn Tennis Company and became the home ground of rugby union team Blackheath F.C. between 1883 and 2016.  The ground has hosted international rugby matches and at one time, along with the Richmond Athletic Ground, it was the unofficial home of the England national rugby union team before the development of Twickenham Stadium.  The ground was also used for first-class and List A cricket by Kent County Cricket Club between 1887 and 1972.

Twickenham Stadium: Twickenham Stadium ( ; usually known as Twickenham or Twickers) is a rugby union stadium in Twickenham, south west London, England.  Owned by the governing body of rugby union in England, the Rugby Football Union (the RFU), the stadium hosts home test matches for the England national rugby union team.  Other rugby union games played at the stadium include the Middlesex Sevens, selected Aviva Premiership fixtures, selected Anglo-Welsh Cup matches, the Varsity Match between the universities of Oxford and Cambridge, and selected European Rugby Champions Cup matches.  The RFU headquarters are in the stadium.

Ewart Bell: Sir William Ewart Bell (13 November 1924 – 2 January 2001) was an Irish Rugby Union player and civil servant who became a Rugby Union administrator later in life.  He was President of the Irish Rugby Football Union (IRFU) and Chair of the 1995 Rugby World Cup.  He was Permanent Secretary at the United Kingdom Northern Ireland Office from 1979–84, a time marked by Republican hunger strikes.

Irish Rugby Football Union: The Irish Rugby Football Union (IRFU) (Irish: "Cumann Rugbaí na hÉireann" ) is the body managing rugby union in the island of Ireland (both Republic of Ireland and Northern Ireland).  The IRFU has its head office at 10/12 Lansdowne Road and home ground at Aviva Stadium, where adult men's Irish rugby union international matches are played.  In addition, the Union also owns Ravenhill in Belfast, Thomond Park in Limerick and a number of grounds in provincial areas that have been rented to clubs.

The Gnoll: The Gnoll (Welsh: "Y Gnol" ) in Neath, Wales is a sports ground, with a capacity of 15,000.  It is used primarily for rugby union and rugby league, although it has also been used previously for association football and cricket.  The stadium has hosted international rugby matches, with it being the home ground of the Wales women's national rugby union team, and men's matches included one during the 2013 Rugby League World Cup against the Cook Islands.

2010 European Under-18 Rugby Union Championship: The 2010 European Under-18 Rugby Union Championship was the seventh annual international rugby union competition for Under 18 national rugby union teams in Europe.  The event was organised by rugby's European governing body, the FIRA – Association of European Rugby (FIRA-AER).  The competition was contested by 24 men's junior national teams and was held in late March and early April 2010.  It was hosted by the Italian region of Veneto, with the final played at the home ground of Benetton Treviso.

Myreside Stadium: Myreside Stadium is a sports ground that is used by Edinburgh Rugby for most of its home matches.  Often simply known as Myreside, Watsonians RFC have used this venue on the east side of Myreside Road as their home ground for rugby union matches since 1933.  Edinburgh Rugby played six Pro12 matches at the stadium in 2017 and following this agreed to play at the stadium for a further three seasons, which will include some Pro14 and European Rugby Challenge Cup matches.  A main stand is positioned along the west side of the grass pitch, with floodlights around the ground.  Ahead of the Edinburgh Rugby team's return to play home matches at the stadium, temporary stands were installed to increase seating capacity to 5,500.

Turks and Caicos Islands Rugby Football Union: The Turks and Caicos Islands Rugby Football Union, or TCIRFU, is the body managing rugby union in the Turks and Caicos Islands.  The TCIRFU has its head office and grounds on Providenciales, where Turks and Caicos rugby union international matches are played.  In addition the Union also trains on Grace Bay beach on Providenciales.

Welford Road Stadium: Welford Road is a rugby union stadium in Leicester, England, and is the home ground for Leicester Tigers.  The ground was opened on 10 September 1892 and is located between Aylestone Road and Welford Road on the southern edge of the city centre.  The ground was developed in two main periods, either side of the First World War stands were built on both sides and then between 1995 and 2016 both ends were developed and the north side redeveloped.  The stadium has a capacity of 25,849, making it the largest purpose-built club rugby union ground in England.  It hosted five full England national team matches between 1902 and 1923, and staged a single match at each of the 1991 and 1999 Rugby World Cups.

Supporting paragraphs: Ewart Bell Irish Rugby Football Union
Answer: Aviva Stadium