Question: Where is the headquarters of the position of Seán Neeson?

full_context: Document 1: Jim Wilson (Northern Ireland politician): Born in County Antrim, Wilson attended Belfast College of Technology before becoming a marine engineer. He was elected to Newtownabbey Borough Council in 1975 for the Vanguard Unionist Progressive Party, and joined the Ulster Unionist Party the following year. However, he resigned his position on the council in 1988. He was UUP General Secretary from the late 1980s until 1998.
Document 2: Ian Anderson (Manx politician): Mr Anderson was born in Glencross, Rathmullan, County Donegal, Ireland, in 1925. He left school at the age of 13 and joined the Belfast Technical College before moving to the Isle of Man in 1946. In 1963 Ian was elected as a member of Patrick commissioners and remained as such until being elected as member of the House of Keys for Glenfaba. In 1982 he was elevated to the Legislative Council and remained a member until retiring from Tynwald in 1993. In 1988 he was elected as the, second ever non-Governor, President of the Legislative Council. He served until 1990 when the constitution was altered and Sir Charles Kerruish became ex officio President. Ian Anderson also held many Ministerial-level appointments during his career. He died on 11 January 2005.
Document 3: Northern Ireland: Northern Ireland (Irish: Tuaisceart Éireann (ˈt̪ɣuəʃcəɾɣt̪ɣ ˈeːɾjən̪ɣ) (listen); Ulster - Scots: Norlin Airlann) is a part of the United Kingdom in the north - east of the island of Ireland, variously described as a country, province or region. Northern Ireland shares a border to the south and west with the Republic of Ireland. In 2011, its population was 1,810,863, constituting about 30% of the island's total population and about 3% of the UK's population. Established by the Northern Ireland Act 1998 as part of the Good Friday Agreement, the Northern Ireland Assembly holds responsibility for a range of devolved policy matters, while other areas are reserved for the British government. Northern Ireland co-operates with the Republic of Ireland in some areas, and the Agreement granted the Republic the ability to ``put forward views and proposals ''with`` determined efforts to resolve disagreements between the two governments''.
Document 4: Charly Chiarelli: Born in Racalmuto, Sicily, Chiarelli grew up in the industrial north end of Hamilton, Ontario. He has a Master's degree in Social Work from Carleton University; also degrees in Psychology from McMaster University and Linguistics from the University of Toronto.
Document 5: Brian Christian: Christian holds a degree from Brown University in computer science and philosophy, and an MFA in poetry from the University of Washington. He is also an alumnus of High Technology High School class of 2002. He is a native of Little Silver, New Jersey. Beginning in 2012, Christian has been a visiting scholar at the University of California, Berkeley.
Document 6: Pervaiz Iqbal Cheema: Cheema was born at Sialkot and was initially educated at Sialkot, later on he moved to Government College, Lahore where he completed his Master's in History. He also did Master's in Political Science from Punjab University, Certificate in Peace Research and International Relations from Oslo University (Norway), Diploma in International Relations from Vienna University (Austria), M. Litt. in Strategic Studies from Aberdeen University (U.K.) and Ph.D. from Quaid-i-Azam University (Pakistan).
Document 7: John Kerry: Kerry was born in Aurora, Colorado and attended boarding school in Massachusetts and New Hampshire. He graduated from Yale University class of 1966 with a political science major. Kerry enlisted in the Naval Reserve in 1966, and during 1968–1969 served an abbreviated four-month tour of duty in South Vietnam as officer-in-charge (OIC) of a Swift Boat. For that service, he was awarded combat medals that include the Silver Star Medal, Bronze Star Medal, and three Purple Heart Medals. Securing an early return to the United States, Kerry joined the Vietnam Veterans Against the War organization in which he served as a nationally recognized spokesman and as an outspoken opponent of the Vietnam War. He appeared in the Fulbright Hearings before the Senate Committee on Foreign Affairs where he deemed United States war policy in Vietnam to be the cause of war crimes.
Document 8: Bríd Rodgers: Although born and brought up in a Gaeltacht area in the west of County Donegal in the Republic of Ireland, she was politically active in Northern Ireland, where she was Deputy-Leader of the Social Democratic and Labour Party (SDLP) and Member of the Legislative Assembly for Upper Bann.
Document 9: Seán Neeson: Seán Neeson (born 9 February 1946) is a politician in Northern Ireland who served as leader of the Alliance Party of Northern Ireland between 1998 and 2001.
Document 10: Christopher Rowley: Christopher Rowley was born in 1948 in Lynn, Massachusetts to an American mother and an English father. Educated for the most part at Brentwood School, Essex, England, he became a London-based journalist in the 1970s. In 1977 he moved to New York City, and he currently lives in upstate New York's Hudson Valley.
Document 11: Stewart Stevenson: James Alexander Stewart Stevenson (known as Stewart Stevenson) ("Gaelic: Seamus Alasdair Stiùbhart MacSteafain") (born 1946) is a Scottish National Party (SNP) politician who has been a Member of the Scottish Parliament (MSP) since 2001. He was the MSP for Banff and Buchan from 2001 to 2011, and after boundary changes he has been the MSP for Banffshire & Buchan Coast since 2011.
Document 12: Colum Eastwood: Colum Eastwood MLA (born 30 April 1983) is an Irish nationalist politician and leader of the Social Democratic and Labour Party (SDLP) since 2015. He was elected to the Northern Ireland Assembly in 2011, and has since been re-elected. He is also the SDLP candidate in the 2019 European Parliament election to represent Northern Ireland.
Document 13: Charles Littlejohn: Born in Nelson, New Zealand, on 4 January 1889, Littlejohn was the son of William Still Littlejohn and Jeannie Littlejohn (née Berry). He was educated at Nelson College from 1898 to 1903, and later went to New College, Oxford as a Rhodes Scholar (from Ormond College, Melbourne University) where he was a Diploma student in anthropology. He was a member of the winning Oxford crews in the Boat Race in 1911 and 1912. He was also a member of the New College eight which won the silver medal for Great Britain rowing at the 1912 Summer Olympics. He was subsequently decorated with the Military Cross while serving in World War I.
Document 14: Chris Lyttle: Born and raised in East Belfast, Lyttle attended Belmont and Strandtown Primary Schools, Sullivan, and Queen's University Belfast, where he received a First Class Honours Degree in Government and Politics. Lyttle was awarded a Helen Ramsey Turtle Scholarship for Conflict Management study at the University of California and a Frank Knox Fellowship for postgraduate training in Public Policy & Administration at Harvard University. He is also an alumnus of the Washington Ireland Program.
Document 15: Liberal Party of Australia: During McMahon's period in office, Neville Bonner joined the Senate and became the first Indigenous Australian in the Australian Parliament. Bonner was chosen by the Liberal Party to fill a Senate vacancy in 1971 and celebrated his maiden parliamentary speech with a boomerang throwing display on the lawns of Parliament. Bonner went on to win election at the 1972 election and served as a Liberal Senator for 12 years. He worked on Indigenous and social welfare issues and proved an independent minded Senator, often crossing the floor on Parliamentary votes.
ground_truth: Belfast
sub_queries: What is the position of Seán Neeson? Answer: Alliance Party of Northern Ireland
Alliance Party of Northern Ireland >> headquarters location Answer: Belfast