Question: What did the man whose cabinet Thomas Walsh joined as Minister for Agriculture lead the introduction of?

full_context: Document 1: Éamon de Valera: Éamon de Valera ( ; ] ; first registered as George de Valero; changed some time before 1901 to Edward de Valera; 14 October 1882 – 29 August 1975) was a prominent politician and statesman in 20th-century Ireland. His political career spanned over half a century, from 1917 to 1973; he served several terms as head of government and head of state. He also led the introduction of the Constitution of Ireland.
Document 2: 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 3: Brian Lenihan Jnr: Brian Joseph Lenihan (21 May 1959 – 10 June 2011) was an Irish Fianna Fáil politician and barrister who served in the government of Ireland as Minister for Justice, Equality and Law Reform from 2007 to 2008 and as Minister for Finance from 2008 to 2011. He was a Teachta Dála (TD) for the Dublin West constituency from 1996 to 2011, and he served as Deputy Leader of Fianna Fáil for a brief period in 2011 until his death from pancreatic cancer.
Document 4: Enda Kenny: Enda Patrick Kenny (born 24 April 1951) is an Irish Fine Gael politician who served as Taoiseach from 2011 to 2017, Leader of Fine Gael from 2002 to 2017, Minister for Defence from May 2014 to July 2014 and 2016 to 2017, Leader of the Opposition from 2002 to 2011, Minister for Tourism and Trade from 1994 to 1997 and Minister of State for Youth Affairs from 1986 to 1987. He has been a Teachta Dála (TD) since 1975, currently for the Mayo constituency.
Document 5: Laurence Walsh: Laurence Joseph Walsh (1 August 1883 – 11 August 1962) was an Irish Fianna Fáil politician. A farmer and merchant, he was first elected to Dáil Éireann as a Fianna Fáil Teachta Dála (TD) for the Louth constituency at the 1937 general election. He was re-elected at the 1938 general election but lost his seat at the 1943 general election. He regained his seat at the 1944 general election but was again defeated at the 1948 general election. He was once more re-elected at the 1951 general election but lost his seat again at the 1954 general election. In 1957 he was nominated by the Taoiseach to the 9th Seanad. Walsh was also Mayor of Drogheda, and a member of the Irish Volunteers, participating in the 1916 Easter Rising. He retired from politics in 1961.
Document 6: Stephen Barrett (Irish politician): Stephen Declan Barrett (26 December 1913 – 8 September 1976) was an Irish Fine Gael politician, barrister and judge. He was first elected to Dáil Éireann as a Fine Gael Teachta Dála (TD) for the Cork Borough constituency at the 1954 by-election caused by the death of Thomas F. O'Higgins of Fine Gael. He was re-elected at each subsequent general election until he retired from politics at the 1969 general election. He later became a Circuit Court judge. He was the father-in-law of Edward M. Walsh, the former president of the University of Limerick.
Document 7: Walter Furlong: Walter Furlong (1 September 1893 – 11 December 1973) was an Irish [[Fianna Fáil]] and later independent politician. Walter's father was an RIC constable, who died when Walter was a boy. Walter was taken under the care of his grandfather, Timothy O' Callaghan. O' Callaghan was a member of the Fenian Brotherhood(his name is listed on the National Monument in the Grand Parade Cork) Walter became active in Nationalist Politics in Cork before the outbreak of World War 1. He was a member of Fianna Eireann and was its first scoutmaster in the city.
Document 8: David I. Walsh: David Ignatius Walsh (November 11, 1872June 11, 1947) was a United States politician from Massachusetts. A member of the Democratic Party, he served as the 46th Governor of Massachusetts before serving several terms in the United States Senate.
Document 9: Thomas Walsh: Thomas Walsh, Tom Walsh or Tommy Walsh may refer to:
Document 10: Leo Varadkar: Leo Eric Varadkar ( ; Irish: "Leo de Varad" ;born 18 January 1979) is an Irish Fine Gael politician who has served as Taoiseach, Minister for Defence and Leader of Fine Gael since June 2017. He has been a Teachta Dála (TD) since 2007, currently for the Dublin West constituency. He previously served as Minister for Social Protection from 2016 to 2017, Minister for Health from 2014 to 2016 and Minister for Transport, Tourism and Sport from 2011 to 2014.
Document 11: Charles de Gaulle: Charles André Joseph Marie de Gaulle (] ; 22 November 1890 – 9 November 1970) was a French general and statesman. He was the leader of Free France (1940–44) and the head of the Provisional Government of the French Republic (1944–46). In 1958, he founded the Fifth Republic and was elected as the President of France, a position he held until his resignation in 1969. He was the dominant figure of France during the Cold War era and his memory continues to influence French politics.
Document 12: Thomas Walsh (Irish politician): Thomas Walsh (18 December 1901 – 14 July 1956) was an Irish Fianna Fáil politician. He first stood for election at the 1943 general election for the Kilkenny constituency but was not successful. He was subsequently elected to Seanad Éireann by the Agricultural Panel and served until 1944. He was unsuccessful candidate at the 1944 general election but was elected to Dáil Éireann at the 1948 general election as a Fianna Fáil Teachta Dála (TD) for the Carlow–Kilkenny constituency. In 1951 he joined the Cabinet of Éamon de Valera as Minister for Agriculture, serving in government on one occasion. Walsh died suddenly in 1956 while still a member of the Dáil. The subsequent by-election was won by the Fianna Fáil candidate Martin Medlar.
Document 13: James Reilly (Irish politician): James Reilly (born 16 August 1955) is an Irish Fine Gael politician and medical doctor. Between the February 2016 general election and the 6 May 2016 formation of a new government, he was the Acting Minister for Children and Youth Affairs, having held that ministry since July 2014 in the previous government, and was also deputy leader of Fine Gael from 2010 to 2017. He was the Minister for Health from March 2011 to July 2014. Reilly was a Teachta Dála (TD) for the Dublin North constituency since the 2007 general election until he lost his seat in the 2016 general election. Reilly was nominated by Taoiseach Enda Kenny to Seanad Éireann in May 2016. James Reilly was re-appointed as deputy leader of Fine Gael on 4 July 2016.
Document 14: 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 15: Leader of Fine Gael: The Leader of Fine Gael is the most senior politician within the Fine Gael political party in Ireland. Since 2 June 2017, the office had been held by Leo Varadkar following the resignation of Enda Kenny.
ground_truth: Constitution of Ireland