Question: Kensington Palace is the official London residence of the Duchess of Gloucester, who is the first cousin of whom?

Context paragraphs:
Kensington Gardens: Kensington Gardens, once the private gardens of Kensington Palace, are among the Royal Parks of London.  The gardens are shared by the City of Westminster and the Royal Borough of Kensington and Chelsea and sit immediately to the west of Hyde Park, in western central London.  The gardens cover an area of 270 acres.  The open spaces of Kensington Gardens, Hyde Park, Green Park, and St. James's Park together form an almost continuous "green lung" in the heart of London.  Kensington Gardens are Grade I listed on the Register of Historic Parks and Gardens.

Embassy of Russia, London: The Embassy of Russia in London is the diplomatic mission of Russia in the United Kingdom.  The main building and Consular section is located at 5 and 6-7 Kensington Palace Gardens at the junction with Bayswater Road, with the Ambassador's Residence located in a separate building at 13 Kensington Palace Gardens (Harrington House).  Russia also maintains a Defence Attaché's Office at 44 Millfield Lane, Highgate and an Office of the Trade Representative at 33 Highgate West Hill, Highgate.

Funeral of Diana, Princess of Wales: The public funeral of Diana, Princess of Wales started on 6 September 1997 at 9:08am in London, when the tenor bell sounded to signal the departure of the cortège from Kensington Palace.  The coffin was carried from the palace on a gun carriage, along Hyde Park to St. James's Palace, where Diana's body had remained for five days before being taken to Kensington Palace.  The Union Flag on top of the palace was lowered to half mast.  The official ceremony was held at Westminster Abbey in London and finished at the resting place in Althorp.

Kensington Road: Kensington Road is a section of road in the Royal Borough of Kensington and Chelsea and Westminster, London, England, forming part of the A315.  It runs along the south edge of Kensington Gardens and Hyde Park.  To the west it becomes Kensington High Street, to the east it becomes Knightsbridge, while Kensington Gore is the name applied to the middle section.  To the north is Kensington Palace and to the south the road is joined by Palace Gate, Queen's Gate, Exhibition Road, and Rutland Gate (west to east).

Claud Andrew Montagu Douglas Scott: Brigadier Claud Andrew Montagu Douglas Scott, DSO (13 July 1906 – 24 January 1971) was the first child and only son born to Lieutenant Colonel Lord Herbert Andrew Montagu Douglas Scott and Marie Josephine Edwards.  He was a grandson of Sir William Henry Walter Montagu Douglas Scott, 6th Duke of Buccleuch & 8th Duke of Queensberry and Lady Louisa Jane Hamilton, and a paternal first cousin to Lady Alice, Duchess of Gloucester, later known as Princess Alice, Duchess of Gloucester.  He was a maternal first cousin once removed to Prince William of Gloucester and Prince Richard, Duke of Gloucester, a paternal great-uncle to Sarah, Duchess of York, and a maternal second great-uncle to Princesses Beatrice and Eugenie of York.

London Museum: The London Museum, established to illustrate the history of London, was inaugurated on 21 March 1912 by King George V with Queen Mary and Princess Mary and Prince George in temporary accommodation at Kensington Palace.  It opened to the public on 8 April, admitting more than 13,000 visitors during the day.  Two years later the collections were moved to Lancaster House in St James's, and the museum remained there until World War II.  The first Keeper of the museum was Sir Guy Francis Laking, and from 1926 to 1944 the Keeper was the famous archaeologist Mortimer Wheeler.  During World War II much of the collection was evacuated for storage at nearby Dover Street tube station, and later at Piccadilly Circus tube station.  Some of the galleries at Lancaster House reopened to the public in 1942, but in November 1943 the building was requisitioned by the Ministry of Works as a conference centre and base for the new European Advisory Commission, the museum retaining only the basement for storage of its collections.  After the war, attempts to reclaim Lancaster House for the museum's use failed.  Eventually in 1948 George VI agreed that the museum might be accommodated once more in part of Kensington Palace, and it reopened there in July 1951.  In 1975 the London Museum was amalgamated with the City of London's Guildhall Museum to form the Museum of London, which opened to the public in a new building in the City of London in 1976.

Lambeth Palace: Lambeth Palace is the official London residence of the Archbishop of Canterbury in England, in north Lambeth, on the south bank of the River Thames, 400 yards south-east of the Palace of Westminster, which houses the Houses of Parliament, on the opposite bank.

Kensington System: The Kensington System was a strict and elaborate set of rules designed by Victoria, Duchess of Kent, along with her attendant, Sir John Conroy, concerning the upbringing of the Duchess's daughter, the future Queen Victoria.  It is named after Kensington Palace in London, where Victoria resided with her mother prior to acceding the throne.

Birgitte, Duchess of Gloucester: Birgitte, Duchess of Gloucester, {'1': ", '2': ", '3': ", '4': "} (born Birgitte Eva Henriksen on 20 June 1946; later van Deurs), is the wife of Prince Richard, Duke of Gloucester, a first cousin of Queen Elizabeth II.

Kensington Palace: Kensington Palace is a royal residence set in Kensington Gardens, in the Royal Borough of Kensington and Chelsea in London, England.  It has been a residence of the British Royal Family since the 17th century, and is currently the official London residence of the Duke and Duchess of Cambridge, Prince Harry, the Duke and Duchess of Gloucester, the Duke and Duchess of Kent, and Prince and Princess Michael of Kent.

Supporting paragraphs: Kensington Palace Birgitte, Duchess of Gloucester
Answer: Queen Elizabeth II