Question: Which Irish Unionist politician was elected unopposed as Member of parliament for South Tyrone in 1916 as part of the Ulster Unionist Party?

full_context: Document 1: United Ulster Unionist Party: The United Ulster Unionist Party (UUUP) was a unionist political party which existed in Northern Ireland between 1975 and 1984.
Document 2: William Coote: William Coote (1863 – 14 December 1924) was an Irish Unionist politician. He was elected unopposed as Member of parliament for South Tyrone at the February 1916 by-election caused by the death of the incumbent Andrew Long Horner. He was re-elected at the 1918 general election and served until the constituency was abolished in 1922.
Document 3: John James Cole: John James Cole (died 24 May 1959) was an Irish politician, farmer and auctioneer. He was first elected to Dáil Éireann as an independent Teachta Dála (TD) for the Cavan constituency at the 1923 general election. He lost his seat at the June 1927 general election but regained it at the September 1927 general election. He again lost his seat at the 1932 general election and was an unsuccessful candidate at the 1933 general election. He was elected again at the 1937 general election and was re-elected at the 1938 and 1943 general elections. He again lost his seat at the 1944 general election and was an unsuccessful candidate at the 1948, 1951, 1954 and 1957 general elections.
Document 4: South Tyrone by-election, 1916: The South Tyrone by-election of 1916 was held on 28 February 1916. The by-election was held due to the death of the incumbent Irish Unionist MP, Andrew Long Horner. It was won by the Irish Unionist candidate William Coote, who was unopposed.
Document 5: List of Ulster Unionist Party MPs: This is a list of Ulster Unionist Party MPs. It includes all Members of Parliament elected to the British House of Commons representing the Ulster Unionist Party or its forerunner, the Irish Unionist Party, since 1918. Members of the European Parliament, the Northern Ireland House of Commons or the Northern Ireland Assembly are not listed.
Document 6: North Londonderry by-election, 1919: The North Londonderry by-election of 1919 was held on 4 March 1919. The by-election was held due to the resignation of the incumbent Irish Unionist MP, Hugh Alfred Anderson. It was won by the Irish Unionist candidate Hugh Thom Barrie. Barrie's Sinn Féin opponent, Patrick McGilligan, would later become Irish Minister for External Affairs.
Document 7: Young Unionists: The Young Unionists, formally known as the Ulster Young Unionist Council (UYUC), is the youth wing of the Ulster Unionist Party (UUP). It has in its present incarnation been in existence since 2004.
Document 8: Fermanagh and South Tyrone by-election, 1986: The 1986 Fermanagh and South Tyrone by-election was one of the fifteen 1986 Northern Ireland by-elections held on 23 January 1986, to fill vacancies in the Parliament of the United Kingdom caused by the resignation in December 1985 of all sitting Unionist Members of Parliament (MPs). The MPs, from the Ulster Unionist Party, Democratic Unionist Party and Ulster Popular Unionist Party, did this to highlight their opposition to the Anglo-Irish Agreement. Each of their parties agreed not to contest seats previously held by the others, and each outgoing MP stood for re-election.
Document 9: Queen's County Ossory by-election, 1886: The Queen's County Ossory, by-election, 1886 was a parliamentary by-election held for the United Kingdom House of Commons constituency of Queen's County Ossory on 12 February 1886. Arthur O'Connor of the Irish Parliamentary Party, member for the former Queen's County constituency, having been elected both in this seat and in East Donegal, chose to sit for the latter. The Queen's County Ossory seat thus became vacant, requiring a by-election. Only one candidate, Stephen O'Mara of the Irish Parliamentary Party, was nominated, and was elected unopposed. He held the seat until the general election later that year, which he did not contest.
Document 10: Ulster Unionist Party: The Ulster Unionist Party (UUP) is a unionist political party in Northern Ireland. Having gathered support in Northern Ireland during the late-nineteenth and early-twentieth centuries, the party governed Northern Ireland between 1921 and 1972. It was supported by most unionist voters throughout the conflict known as the Troubles, during which time it was often referred to as the Official Unionist Party (OUP). Between 1905-1972 its MPs took the Conservative whip at Westminster.
Document 11: Electoral history of the Ulster Unionist Party: The Ulster Unionist Party held the majority of Northern Ireland seats in most elections for the Westminster Parliament between 1922 and 2001. Since then its representation has been low or non-existent, having been eclipsed by the Democratic Unionist Party. It always had an absolute majority in the Stormont Parliament (1921–1972); since that Parliament was replaced by the Northern Ireland Assembly it has had a substantial minority representation there. Its share of the vote in Northern Ireland local government elections has tended to diminish, so that there too it is no longer the largest party. Finally, the party has always held one of the three Northern Ireland seats in the European Parliament. Its share of the Northern Ireland vote in the most recent elections to these bodies has been between 10.5% (Westminster 2017) and 16.1% (local government, 2014).
Document 12: Vanguard Unionist Progressive Party: The Vanguard Unionist Progressive Party (VUPP), informally known as Ulster Vanguard, was a unionist political party which existed in Northern Ireland between 1972 and 1978. Led by William Craig, the party emerged from a split in the Ulster Unionist Party (UUP) and was closely affiliated with several loyalist paramilitary groups. The presence of features such as an honour guard and a common salute led opponents to accuse it of being fascist. The party was set up in opposition to power sharing with Irish nationalist parties. It opposed the Sunningdale Agreement and was involved in extra-parliamentary activity against the agreement. However, in 1975, during discussions on the constitutional status of Northern Ireland in the constitutional convention, William Craig suggested the possibility of voluntary power sharing with the nationalist Social Democratic and Labour Party. In consequence the party split, with dissenters forming the United Ulster Unionist Party. Thereafter Vanguard declined and following poor results in the 1977 local government elections, Craig merged the remainder of Vanguard into the UUP in February 1978.
Document 13: United Ulster Unionist Council: The United Ulster Unionist Council (also known as the United Ulster Unionist Coalition) was a body that sought to bring together the Unionists opposed to the Sunningdale Agreement in Northern Ireland.
Document 14: The Wrekin by-election, 1920 (February): The Wrekin by-election of 1920 was held on 7 February 1920. The by-election was held due to the death of the incumbent Coalition Liberal MP, Sir Charles Henry Bt. It was won by the Independent Conservative candidate Charles Frederick Palmer, who was backed by Horatio Bottomley's Independent Parliamentary Group.
Document 15: Hugh Anderson (Unionist politician): Hugh Alfred Anderson (26 November 1867 – 16 June 1933) was an Irish Unionist politician. He was elected Member of Parliament for North Londonderry in December 1918, resigning early in 1919.
ground_truth: William Coote