Question:  Tír na nÓg are an Irish folk band formed in 1969 in a sovereign state in north-western Europe whose head of government is the what?

full_context: Document 1: Leo O'Kelly: Leo O'Kelly (born 27 November 1949, Carlow, Co. Carlow, Ireland) is an Irish singer-songwriter, multi-instrumentalist, and producer. He is mainly known as a member of the Irish folk duet Tír na nÓg. After the band broke up, he produced albums on Polydor and EMI labels for other Irish artists like "Restless Night (Ray Dolan album)" in 1975 by Ray Dolan who wrote "Hey Friend" on the first Tír na nÓg LP. In 2000, Leo released his first solo album called "Glare", then "Proto" in 2003 which consists in a collection of songs that he recorded between 1975 and 2001 whose one is a cover with Mark Gilligan of Nick Drake's "Northern Sky" and another is a vocal improvisation by his son, Aaron O'Kelly, at the age of 1. His third album, "Will", was released in February 2011 and features the poems of John McKenna set to music.
Document 2: France: France (French IPA: ] ), officially the French Republic (French: "République française" ] ), is a country whose territory consists of metropolitan France in western Europe, as well as several overseas regions and territories. The metropolitan area of France extends from the Mediterranean Sea to the English Channel and the North Sea, and from the Rhine to the Atlantic Ocean. The overseas territories include French Guiana in South America and several islands in the Atlantic, Pacific and Indian oceans. The country's 18 integral regions (5 of which are situated overseas) span a combined area of 643801 km2 which, as of January 2017, has a total population of almost 67 million people. France is a unitary semi-presidential republic with its capital in Paris, the country's largest city and main cultural and commercial centre. Other major urban centres include Marseille, Lyon, Lille, Nice, Toulouse and Bordeaux.
Document 3: Ray Dolan: Ray Dolan was an Irish singer-songwriter and guitarist. He began his career in the early 1970 by playing folk clubs in Dublin with James Connolly as a duo, contributing to the success of the Universal Folk Centre at Parnell Square. In 1973, they were involved in the five-member band Heir. The two musicians also participated in the final Anne Byrne album "Come by the Hills", published in 1974, and containing a cover of the Dolan's song "Constantly Changing". He went solo that year, and recorded an album on EMI label in 1975, "Restless Night", but he remains mainly known for the Tír na nÓg version of his song "Hey Friend" from their eponymous album released by Chrysalis Records in 1971. The Irish duo contributed to his solo album with Leo O'Kelly as producer, and among other guests like Philip King, future Scullion founder with Sonny Condell. The same year, he did a brief screen appearance in an episode of the BBC Two documentary series "The Camera & The Song", dedicated to O'Kelly and Condell.
Document 4: Government of Ireland: The Government of Ireland (Irish: "Rialtas na hÉireann" ) is the cabinet that exercises executive authority in the Republic of Ireland.
Document 5: Scullion (group): Scullion are an Irish folk rock band that formed in the mid-1970s. They were quite popular in Ireland, and released several LPs, and two CDs – the compilation "Ghosts And Heroes" on the Kitten label in 1992 and another compilation "Eyelids into Snow – A Collection" in 2001. The founding members were Sonny Condell (also a member of another popular Irish music band Tír na nÓg), Philip King, Greg Boland and Jimmy O'Brien Moran. O'Brien Moran left the band in 1980, after the first album. Robbie Overson, replacing guitarist Greg Boland, joined the band in 1987. Scullion continue to play live.
Document 6: Dublin Central (Dáil Éireann constituency): Dublin Central is a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas. The constituency elects 3 deputies (Teachtaí Dála, commonly known as TDs). The method of election is the single transferable vote form of proportional representation (PR-STV).
Document 7: The Dubliners: The Dubliners were an Irish folk band founded in Dublin in 1962. The band started off as "The Ronnie Drew Ballad Group", named in honour of its founding member; they subsequently renamed themselves as The Dubliners. The group line-up saw many changes over their fifty-year career. However, the group's success was centred on lead singers Luke Kelly and Ronnie Drew. The band garnered international success with their lively Irish folk songs, traditional street ballads and instrumentals. The band were regulars on the folk scenes in both Dublin and London in the early 1960s, and were signed to the Major Minor label in 1965 after backing from Dominic Behan. They went on to receive extensive airplay on Radio Caroline, and eventually appeared on "Top of the Pops" in 1967 with hits "Seven Drunken Nights" (which sold over 250,000 copies in the UK) and "The Black Velvet Band". Often performing political songs considered controversial at the time, they drew criticism from some folk purists and Ireland’s national broadcaster RTÉ had placed an unofficial ban on their music from 1967–71. During this time the band's popularity began to spread across mainland Europe and they appeared on "The Ed Sullivan Show" in the United States. The group's success remained steady right through the 1970s and a number of collaborations with The Pogues in 1987 saw them enter the UK Singles Chart on another two occasions.
Document 8: Éire: Éire (] ) is Irish for "Ireland", the name of an island and a sovereign state. The English pronunciation is ( ).
Document 9: Sonny Condell: Sonny Condell (born 1 July 1949, in Newtownmountkennedy, Ireland) is an Irish singer-songwriter, multi-instrumentalist, and graphic artist. He is mainly known as a member of the Irish bands Tír na nÓg and Scullion. He released some hits in Ireland as a solo artist like "Down In The City" in 1977 that he covered later with the Belgian singer Micha Marah on her album "Voyage" in 1998. For some years, Sonny has got his own solo band called Radar, although he still plays with Tír na nÓg and Scullion.
Document 10: Tír na nÓg (band): Tír na nÓg are an Irish folk band formed in Dublin, Ireland, in 1969 by Leo O'Kelly and Sonny Condell. They are often considered as one of the first progressive folk bands with other artists like Nick Drake or groups like Pentangle. Their music mainly consists of their own compositions, based on strong Celtic roots and typically featuring intricate acoustic guitar playing and close harmony singing. In their early years, they toured the folk clubs of the United Kingdom or internationally as a support act for several rock bands. Today, they regularly give concerts, especially in Ireland.
Document 11: Tír na nÓg (album): Tír na nÓg is the first album by Irish band Tír na nÓg. It was released in May 1971 in the United Kingdom by Chrysalis Records and distributed by Island Records but was not published in the United States because Leo O'Kelly and Sonny Condell refused to record a cover of Bob Dylan's "Maggie's Farm" for the album, a song they regularly played live.German and Spanish presses of the LP have an Island label although the Chrysalis logo also appears on them.
Document 12: Republic of Ireland: Ireland ( ; Irish: "Éire" ] ), also known as the Republic of Ireland ("Poblacht na hÉireann "), is a sovereign state in north-western Europe occupying 26 of 32 counties of the island of Ireland. The capital and largest city is Dublin, which is located on the eastern part of the island, and whose metropolitan area is home to around a third of the country's 4.75 million inhabitants. The state shares its only land border with Northern Ireland, a part of the United Kingdom. It is otherwise surrounded by the Atlantic Ocean, with the Celtic Sea to the south, Saint George's Channel to the south-east, and the Irish Sea to the east. It is a unitary, parliamentary republic. The legislature, the "Oireachtas ", consists of a lower house, "Dáil Éireann ", an upper house, "Seanad Éireann ", and an elected President ("Uachtarán ") who serves as the largely ceremonial head of state, but with some important powers and duties. The head of government is the "Taoiseach " (Prime Minister, literally 'Chief', a title not used in English), who is elected by the Dáil and appointed by the President; the Taoiseach in turn appoints other government ministers.
Document 13: Fine Gael: Fine Gael ( ; English: "Family" or "Tribe of the Irish") is a liberal-conservative and Christian democratic political party in Ireland. Fine Gael is currently the governing and largest party in Ireland in terms of members of the Oireachtas and Irish members of European Parliament. The party has a membership of 35,000, and is the senior partner governing in a minority coalition with several independent politicians, with party leader Leo Varadkar serving as Taoiseach . Varadkar succeeded Enda Kenny as party leader on 2 June 2017 and as Taoiseach on 14 June; Kenny had been leader since 2002, and Taoiseach since 2011.
Document 14: United Kingdom: The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) and colloquially Great Britain (GB) or simply Britain, is a sovereign country in western Europe. Lying off the north-western coast of the European mainland, the United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland and many smaller islands. Northern Ireland is the only part of the United Kingdom that shares a land border with another sovereign statethe Republic of Ireland. Apart from this land border, the United Kingdom is surrounded by the Atlantic Ocean, with the North Sea to its east, the English Channel to its south and the Celtic Sea to its south-south-west, giving it the 12th-longest coastline in the world. The Irish Sea lies between Great Britain and Ireland. With an area of 242500 km2 , the United Kingdom is the 78th-largest sovereign state in the world and the 11th-largest in Europe. It is also the 21st-most populous country, with an estimated 65.1 million inhabitants. Together, this makes it the fourth-most densely populated country in the European Union (EU).
Document 15: Tír na nÓg concerts: From 1970 through 1975, then from 1985 through present, Irish folk group Tír na nÓg especially performed concerts in the United Kingdom, either as a support act to bands and solo artists like Jethro Tull, Steeleye Span, Supertramp, Elton John, Hawkwind or as main performers.
ground_truth: Taoiseach