Question: Klitgaarden (lit."The Dune House") is a former summer residence of the Danish royal family situated just south of Skagen on the northern tip of Jutland, the house was designed by Ulrik Plesner, and completed in 1914, for King Christian X and Queen Alexandrine, Alexandrine of Mecklenburg-Schwerin (24 December 1879 – 28 December 1952) was Queen of Denmark as the spouse of King Christian X, she was also of which title?

Context paragraphs:
King Christian X Land: King Christian X Land (Danish: "Kong Christian X Land" ) is an area of northeastern Greenland.

Knud, Hereditary Prince of Denmark: Knud, Hereditary Prince of Denmark (Knud Christian Frederik Michael; 27 July 1900 – 14 June 1976), was the younger son and child of Christian X and Alexandrine of Mecklenburg-Schwerin.

Alexandrine of Mecklenburg-Schwerin: Alexandrine of Mecklenburg-Schwerin (24 December 1879 – 28 December 1952) was Queen of Denmark as the spouse of King Christian X.  She was also Queen of Iceland from 1 December 1918 to 17 June 1944.

Klitgaarden: Klitgaarden (lit.  "The Dune House") is a former summer residence of the Danish royal family situated just south of Skagen on the northern tip of Jutland.  The house was designed by Ulrik Plesner for King Christian X and Queen Alexandrine and completed in 1914.  It is now owned and run by a trust and serves as a retreat for artists and scientists.

HDMY Dannebrog (A540): Her Danish Majesty's Yacht "Dannebrog" (A540) (Danish: "KDM Dannebrog" ) was launched by Queen Alexandrine at Copenhagen in 1931, and commissioned on 26 May 1932.  The yacht now serves as the official and private residence for Queen Margrethe II of Denmark, the Prince Consort, and members of the Royal Family when they are on official visits overseas and on summer cruises in Danish waters.  When at sea, the Royal Yacht also participates in surveillance and sea-rescue services.

Succession to the Danish throne: The Danish Act of Succession, adopted on 27 March 1953, restricts the throne to those descended from Christian X and his wife, Alexandrine of Mecklenburg-Schwerin, through approved marriages.  Succession is governed by absolute primogeniture.

King Christian X's Liberty Medal: King Christian X's Liberty Medal (Danish: "Kong Christian den Tiendes frihedsmedaille" ) was a commemorative decoration awarded by King Christian X for special services to Denmark during World War II.

Ulrik Plesner: Ulrik Adolph Plesner, usually known as Ulrik Plesner, (1861–1933) was an innovative Danish architect who designed in a National Romantic style at the beginning of the 20th century.  He is remembered in particular for his influence on the style of architecture practiced in Skagen in the north of Jutland.

Anchers Hus: Anchers Hus is the former residence of the painters Michael and Anna Ancher in Skagen, Denmark.  They were both central figures in the artist colony of Skagen Painters who lived and worked in the town during late 19th and early 20th century.  They lived in the house for five decades and in 1913 expanded it with a studio annex designed by Ulrik Plesner, another member of the colony.

Prince Harald of Denmark: Prince Harald of Denmark ("Harald Christian Frederik"; 8 October 1876 - 30 March 1949) was a member of the Danish Royal Family.  He was the third son of Frederick VIII of Denmark and his wife, Lovisa of Sweden, and thus brother to Christian X of Denmark.

Supporting paragraphs: Klitgaarden Alexandrine of Mecklenburg-Schwerin
Answer: Queen of Iceland