Table:
text: List of European Council meetings
1975–2009
1975–2009
Year_ Date_ Type_ EU_Council_presidency President_in_Office Host_city
1979 12–13 March ― France Valéry Giscard d`Estaing Paris
1979 21–22 June ― France Valéry Giscard d`Estaing Strasbourg
1979 29–30 November ― Ireland Jack Lynch Dublin
1980 17–18 April ― Italy Francesco Cossiga Luxembourg
1980 12–13 June ― Italy Francesco Cossiga Venice
1980 1–2 December ― Luxembourg Pierre Werner Luxembourg
1981 23–24 March ― Netherlands Dries van Agt Maastricht
1981 29–30 June ― Netherlands Dries van Agt Luxembourg
1981 26–27 November ― UK Margaret Thatcher London
1982 29–30 March ― Belgium Wilfried Martens Brussels
1982 28–29 June ― Belgium Wilfried Martens Brussels
1982 3–4 December ― Denmark Poul Schlüter Copenhagen
1983 21–22 March ― Germany Helmut Kohl Brussels

text: List of European Council meetings
1975–2009
1975–2009
Year_ Date_ Type_ EU_Council_presidency President_in_Office Host_city
1983 17–19 June ― Germany Helmut Kohl Stuttgart
1983 4–6 December ― Greece Andreas Papandreou Athens
1984 19–20 March ― France François Mitterrand Brussels
1984 25–26 June ― France François Mitterrand Fontainebleau
1984 3–4 December ― Ireland Garret FitzGerald Dublin
1985 29–30 March ― Italy Bettino Craxi Brussels
1985 28–29 June ― Italy Bettino Craxi Milan
1985 2–3 December ― Luxembourg Jacques Santer Luxembourg
1986 26–27 June ― Netherlands Ruud Lubbers The Hague
1986 5–6 December ― UK Margaret Thatcher London
1987 29–30 June ― Belgium Wilfried Martens Brussels
1987 4–5 December ― Denmark Poul Schlüter Copenhagen
1988 11–13 February ― Germany Helmut Kohl Brussels

Question: In which city was Margaret Thatcher the President-in-Office in 1981 among the list of European Council meetings from 1975 to 2009?