Question:  The 2012 Olympic hunger summit was held at the official residence and office of who?

full_context: Document 1: 10 Downing Street: 10 Downing Street, colloquially known in the United Kingdom as Number 10, is the headquarters of the Government of the United Kingdom and the official residence and office of the First Lord of the Treasury, a post which, for much of the 18th and 19th centuries and invariably since 1905, has been held by the Prime Minister.
Document 2: List of Prime Ministers of the United Kingdom: The Prime Minister of the United Kingdom is the head of the Government of the United Kingdom, and chairs Cabinet meetings. There is no specific date when the office of Prime Minister first appeared, as the role was not created but rather evolved over a period of time. The term was used in the House of Commons in 1805 and it was certainly in parliamentary use by the 1880s, and in 1905 the post of Prime Minister was officially given recognition in the order of precedence. Modern historians generally consider Sir Robert Walpole, who led the government of Great Britain from 1721 to 1742, as the first Prime Minister. Walpole is also the longest-serving Prime Minister by this definition. However, Sir Henry Campbell-Bannerman was the first Prime Minister and Margaret Thatcher the longest-serving Prime Minister to have been officially referred to as such.
Document 3: Chief Mouser to the Cabinet Office: The Chief Mouser to the Cabinet Office is the title of the official resident cat of the Prime Minister of the United Kingdom at 10 Downing Street. Only four cats, Humphrey, Sybil, Larry and Freya have been given the title officially; other cats were given this title affectionately, usually by the British press. There has been a resident Treasury or Downing Street cat employed as a mouser and pet since the reign of Henry VIII, when Cardinal Wolsey placed his cat by his side while acting in his judicial capacity as Lord Chancellor, an office he assumed in 1515.
Document 4: Marienborg: Marienborg has been the official residence of Denmark's prime minister since 1962. It is frequently used for governmental conferences, summits and other official purposes, including the prime minister's new year speech. Unlike the residences of other heads of government and state (e.g. the White House, 10 Downing Street, La Moncloa and Élysée Palace), Marienborg does not serve as the government headquarters or contain the office of the prime minister, instead Christiansborg Palace is the location of the government departments.
Document 5: List of 2012 Summer Olympics medal winners: The 2012 Summer Olympics, officially known as the Games of the XXX Olympiad, were held in London, United Kingdom, from 25 July 2012 to 12 August 2012.
Document 6: Great Offices of State: The Great Offices of State in the United Kingdom are the four most senior and prestigious posts in the British government. They are the Prime Minister, Chancellor of the Exchequer, Foreign Secretary and Home Secretary. According to convention, when the Prime Minister names his or her Cabinet, either after a general election or a mid-term reshuffle, the first Cabinet ministers to be announced are the Chancellor, the Foreign Secretary and the Home Secretary.
Document 7: Great Britain at the 2012 Summer Olympics: Great Britain, represented by the British Olympic Association (BOA), competed at the 2012 Summer Olympics in London, United Kingdom, from 27 July to 12 August 2012 as the host nation. British athletes have competed at every Summer Olympic Games in the modern era, alongside Australia, France and Greece, though Great Britain is the only one to have won at least one gold medal at all of them. London is the only city to host the Summer Olympics on three different occasions, having previously done so in 1908 and 1948. Soon, it will be joined by Paris in 2024 and Los Angeles in 2028 in hosting the Olympic Games for a third time. Team GB, organised by BOA, sent a total of 541 athletes, 279 men and 262 women, to the Games, and won automatic qualification places in all 26 sports.
Document 8: 2012 Summer Olympics opening ceremony: The opening ceremony of the 2012 Summer Olympic Games took place on the evening of Friday 27 July in the Olympic Stadium, London. As mandated by the Olympic Charter, the proceedings combined the formal ceremonial opening of this international sporting event (including welcoming speeches, hoisting of the flags and the parade of athletes) with an artistic spectacle to showcase the host nation's culture. The 2012 Games were formally opened by Queen Elizabeth II. The spectacle was entitled Isles of Wonder and directed by Academy Award-winning British film director Danny Boyle.
Document 9: 2012 Summer Olympics: The 2012 Summer Olympics, formally the Games of the XXX Olympiad and commonly known as London 2012, was a major international multi-sport event celebrated in the tradition of the Olympic Games, as governed by the International Olympic Committee (IOC). It took place in London and to a lesser extent across the United Kingdom from 25 July to 12 August 2012. The first event, the group stage in women's football began on 25 July at the Millennium Stadium in Cardiff, followed by the opening ceremonies on 27 July. 10,768 athletes from 204 National Olympic Committees (NOCs) participated.
Document 10: Prime Minister's Official Spokesperson: The Prime Minister's Official Spokesperson or alternatively Prime Minister's Official Spokesman/Spokeswoman is a position in the United Kingdom's Civil Service, located in the Prime Minister's Office in 10 Downing Street and used by the British Prime Minister to convey information to the public. The Prime Minister's Official Spokesperson usually addresses a small group of press and media correspondents, known as lobby correspondents, each morning to deliver statements on current events on behalf of the Prime Minister.
Document 11: List of residents of 10 Downing Street: Number 10 Downing Street is the residence and office of the First Lord of the Treasury as Prime Minister of the United Kingdom. The headquarters of Her Majesty's Government, it is situated on Downing Street in the City of Westminster in London, England.
Document 12: Somalia at the 2012 Summer Olympics: Somalia participated at the 2012 Summer Olympics in London, United Kingdom, which took place from 27 July to 12 August 2012. The country's participation in London marked its ninth appearance in the Summer Olympics since its debut at the 1972 Summer Olympics. The delegation included one short-distance sprinter and one long-distance runner: Mohamed Hassan Mohamed and Zamzam Mohamed Farah. Both qualified for the games through wildcard places from the International Association of Athletics Federations. Farah was selected as the flag bearer for both the opening and closing ceremonies. Mohamed and Farah failed to advance beyond the heat stage of their respective events.
Document 13: Great Britain at the 2012 Summer Paralympics: Great Britain competed at the 2012 Summer Paralympics in London, United Kingdom, from 29 August to 9 September 2012 as the host nation. A total of 288 athletes were selected to compete along with 13 other team members such as sighted guides. The country finished third in the medals table, behind China and Russia, winning 120 medals in total; 34 gold, 43 silver and 43 bronze. Multiple medallists included cyclist Sarah Storey and wheelchair athlete David Weir, who won four gold medals each, and swimmer Stephanie Millward who won a total of five medals. Storey also became the British athlete with the most overall medals, 22, and equal-most gold medals, 11, in Paralympic Games history. To commemorate the achievements of each gold medallist Royal Mail painted a post box gold, usually in the athlete's home town.
Document 14: 2012 Olympic hunger summit: The 2012 Olympic hunger summit was an international gathering on 12 August, the closing day of the 2012 Summer Olympics, held at 10 Downing Street London. The event was organised largely by the Department for International Development. It was co-hosted by Britain's prime minister, David Cameron, and by Brazil's vice president Michel Temer. The summit was attended by several high-profile athletes and by delegates from various national governments, the United Nations, NGOs and from the private sector.
Document 15: 11 Downing Street: 11 Downing Street (sometimes referred to as just Number 11) is the official residence of Britain's Chancellor of the Exchequer (who traditionally also has the title of Second Lord of the Treasury). The residence, in Downing Street in London, was built alongside the official residence of the Prime Minister at Number 10 in 1682.
ground_truth: First Lord of the Treasury