Question: Where did United Ulster Unionist Council Sign the Sunningdale Agreement?

full_context: Document 1: Sunningdale Agreement: The Sunningdale Agreement was an attempt to establish a power-sharing Northern Ireland Executive and a cross-border Council of Ireland. The Agreement was signed at Sunningdale Park located in Sunningdale, Berkshire, on 9 December 1973.
Document 2: 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 3: United Ireland: United Ireland is the proposition that the whole of Ireland should be a single sovereign state. At present, the island is divided politically; the sovereign state of Ireland has jurisdiction over the majority of Ireland, while Northern Ireland is part of the United Kingdom. Achieving a united Ireland is a central tenet of Irish nationalism, particularly of both mainstream and dissident Irish republican political and paramilitary organisations. Unionists support Northern Ireland remaining part of the United Kingdom, and therefore oppose Irish unification.
Document 4: Principle of consent: Principle of consent is a term used in the context of the Northern Ireland peace process and is one of the key points of the Good Friday Agreement. The principle states both the legitimacy of the aspiration to a United Ireland and the legitimacy of the wish of the majority of the people of Northern Ireland to remain part of the United Kingdom. The doctrine also underlines the right of self-determination for the people of both jurisdictions in Ireland, Northern Ireland and the Republic of Ireland, without external interference, and only with the consensus of a majority of people in both polities.
Document 5: Decommissioning in Northern Ireland: Decommissioning in Northern Ireland was a process in the Belfast Agreement as part of the Northern Ireland peace process. Under the Belfast Agreement, all paramilitary groups fighting in the Troubles would decommission. Decommissioning was a defining issue in the effort to negotiate peace in Northern Ireland.
Document 6: Good Friday Agreement: The Good Friday Agreement (GFA) or Belfast Agreement (Irish: "Comhaontú Aoine an Chéasta" or "Comhaontú Bhéal Feirste"; Ulster-Scots: "Guid Friday Greeance" or "Bilfawst Greeance") was a major political development in the Northern Ireland peace process of the 1990s. Northern Ireland's present devolved system of government is based on the agreement. The agreement also created a number of institutions between Northern Ireland and the Republic of Ireland, and between the Republic of Ireland and the United Kingdom.
Document 7: 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 8: St Andrews Agreement: The St Andrews Agreement (Irish: "Comhaontú Chill Rímhinn" ; Ulster Scots: "St Andra's 'Greement", "St Andrew's Greeance" or "St Andrae's Greeance") was an agreement between the British and Irish governments and Northern Ireland's political parties in relation to the devolution of power in the region. The agreement resulted from multi-party talks held in St Andrews in Fife, Scotland, from 11 to 13 October 2006, between the two governments and all the major parties in Northern Ireland, including the two largest, the Democratic Unionist Party (DUP) and Sinn Féin. It resulted in the restoration of the Northern Ireland Assembly, the formation (on 8 May 2007) of a new Northern Ireland Executive and a decision by Sinn Féin to support the Police Service of Northern Ireland, courts and rule of law.
Document 9: 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 10: 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 11: Northern Ireland peace process: The Northern Ireland peace process is often considered to cover the events leading up to the 1994 Provisional Irish Republican Army (IRA) ceasefire, the end of most of the violence of the Troubles, the Good Friday (or Belfast) Agreement of 1998, and subsequent political developments.
Document 12: 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 13: Downing Street Declaration: The Downing Street Declaration (DSD) was a joint declaration issued on 15 December 1993 by the Prime Minister of the United Kingdom, John Major, and the Taoiseach of the Republic of Ireland, Albert Reynolds at the British Prime Minister's office in 10 Downing Street.
Document 14: Ulster Unionist Party leadership election, 1979: The Ulster Unionist Party leadership election of 1979 saw James Molyneaux succeed Harry West as leader on 7 September. At a specially convened meeting of the Ulster Unionist Council at the Ulster Hall, Belfast in early September, Molyneaux (MP for South Antrim) beat Reverend Robert Bradford (MP for Belfast South) by a three to one majority (with Austin Ardill coming a distant third). Molyneaux had previously been parliamentary leader of the United Ulster Unionist Council since 22 October 1974 (West had lost his seat in that month's general election).
Document 15: 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.
ground_truth: Sunningdale Park