Title: Sport in Ireland
Content:   Rugby union is played and supported throughout Ireland, and is especially popular in urban areas such as Dublin, Limerick and Cork. Rugby union is played at club, province and national levels. The Ireland national team is composed of players from both Northern Ireland and the Republic, and the Irish Rugby Football Union governs the sport throughout the island. Success at international level and the establishment of four professional teams has increased interest in rugby union as a sport in Ireland. As of September 2019, prior to the commencement of the 2019 Rugby World Cup, the Ireland national rugby union team was ranked 1st in the World Rugby Rankings. At the 2018 World Rugby Awards, Ireland 
Title: Irish Rugby Football Union
Content:  The Irish Rugby Football Union (IRFU) (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 the Ravenhill Stadium in Belfast, Thomond Park in Limerick and a number of grounds in provincial areas that have been rented to clubs.
Title: Ireland national rugby league team
Content:  In 2015 Rugby League Ireland announced that the Carlisle Grounds in Bray, County Wicklow would become the official home ground of the national team. Despite this announcement, Ireland have also subsequently used Morton Stadium in Santry as their home ground. Below is a list of the highest attendances for international rugby league matches in Ireland.
Title: Rugby union in Ireland
Content:  Rugby union in Ireland is a very popular team sport. Rugby union is organised on an all-Ireland basis with one national team, governing body and league for both the Republic of Ireland and Northern Ireland. Founded in 1879, the Irish Rugby Football Union is the third-oldest rugby union after England and Scotland, and was formed two years prior to the Welsh Rugby Union.
Title: Connacht Rugby
Content:  Connacht Rugby (Rugbaí Connachta) is one of the four professional provincial rugby teams from the island of Ireland. Connacht competes in the United Rugby Championship and the European Rugby Champions Cup. The team represents the IRFU Connacht Branch, which is one of four primary branches of the IRFU, and is responsible for rugby union throughout the geographical Irish province of Connacht. Connacht plays its home games at the Galway Sportsgrounds, which holds 8,100 spectators. Connacht play in a predominantly green jersey, shorts and socks. The Connacht Rugby crest is a modified version of the provincial flag of Connacht and consists of a dimidiated eagle and an arm wielding a sword. With the province containing just over 8% of the total Irish population, Connacht has a much smaller base of rugby union players to choose from than the 
Title: Rugby union in Ireland
Content:  and France which Ireland lost 17–20. The following match against England generated some controversy, since it involved the playing of God Save the Queen at a ground where British soldiers had killed fourteen spectators on Bloody Sunday, 1920. There was a small protest by Republican Sinn Féin outside the ground which included a man holding a sign saying No to foreign games while ironically wearing a Celtic FC tracksuit. Irish Rugby have officially announced their bid to host the 2023 Rugby World Cup on 15 November 2016. This will include 8 venues that are owned by the GAA. They are Croke Park (Dublin), Fitzgerald Stadium (Kerry), Páirc Uí Chaoimh (Cork), Pearse Stadium (Galway), Casement Park (Belfast), Elverys MacHale Park (Mayo), Nowlan Park (Kilkenny) and Celtic Park (Derry).
Title: Sport in Ireland
Content:  Rugby league in Ireland is governed by Rugby League Ireland, which runs the Irish Elite League (known as the Carnegie League for sponsorship purposes), which is the top level rugby league competition in Ireland. There are approximately 20 teams across Ulster, Munster and Leinster. The Irish rugby league team compete in the European Cup and the Rugby League World Cup. It is made up predominantly of players based in Great Britain. Ireland reached the quarter-finals of the 2000 Rugby League World Cup and the 2008 Rugby League World Cup.
Title: Northern Ireland
Content:  The six counties of Northern Ireland are among the nine governed by the Ulster branch of the Irish Rugby Football Union, the governing body of rugby union in Ireland. Ulster is one of the four professional provincial teams in Ireland and competes in the United Rugby Championship and European Cup. It won the European Cup in 1999. In international competitions, the Ireland national rugby union team's recent successes include four Triple Crowns between 2004 and 2009 and a Grand Slam in 2009 in the Six Nations Championship.
Title: Sport in Northern Ireland
Content:  Rugby union is a very popular team sport played in Ireland. The sport is organised on an all-Ireland basis with one team, governing body and league for both the Republic of Ireland and Northern Ireland. Governing body Irish Rugby Football Union The Irish Rugby Football Union is the governing body for rugby union in Ireland. The IRFU is divided into four branches which represent the four provinces of Ireland: Ulster, Munster, Leinster and Connacht.
Title: Rugby league in Ireland
Content:  Rugby league is a team sport played in Ireland on an all-Ireland basis.

Question: where do ireland play rugby union?
Answer: Zarathustra.