question: Who is Carl Rustad's father?
context: [["Marie Magdalena Rustad", ["Marie Magdalena Rustad (1859-1943), was a Norwegian court official.", "She served as the \"overhoffmesterinne\" for Queen Maud of Norway.", "She was married to Fritz Rustad."]], ["Alexander von Hanstein, Count of P\u00f6lzig and Beiersdorf", ["Maximilian Elis\u00e4us Alexander von Hanstein, Count of P\u00f6lzig and Beiersdorf( 9 June 1804, Burghaig, Kulmbach \u2013 18 April 1884, Schm\u00f6lln) was a Thuringian count.", "He was the stepfather of Prince Albert and grandfather of Hans Poelzig."]], ["Carl Rustad", ["Carl Emil Rustad (10 December 1881 \u2013 1957) was a Norwegian military officer and director.", "He was born in Kristiania as a son of Lord Chamberlain Fredrik", "\"Fritz\" Frantz Michael Wilhelm Rustad (1852\u20131930) and Mistress of the Robes Marie Magdalena Schou (1859\u20131943).", "He was a maternal grandson of Halvor Schou.", "In 1909 he married Bergliot Heiberg, a sister of professor Jean Heiberg.", "He finished his secondary education in 1899, became an Aritllery officer in 1902 and graduated from the Norwegian Military College in 1905.", "He served at an artillery and dragoon regiment in Lyon for ten months in 1906, then as an aspirant in the General Staff from 1906 to 1917 and military attach\u00e9 in Stockholm and Petrograd from 1912 to 1917.", "He was promoted to captain in 1915 and major in 1929.", "He was decorated with the Order of St. Anna, 3rd Class, as a Knight, First Class of the Order of Vasa and Chevalier of the Legion of Honour.", "He was hired in Elektrokemisk in 1917, then in Norsk Spr\u00e6ngstofindustri in 1920.", "He was then the chief executive officer of Norsk Spr\u00e6ngstofindustri from 1926 to 1946.", "He was a board member of Norsk Aluminium Company, Oslo Sparebank, Forsikringsselskapet Idun and Storebrand.", "Eger became a member of the gentlemen's skiing club SK Fram in 1915.", "He died in 1957."]], ["Lolo Soetoro", ["Lolo Soetoro", "( EYD: Lolo Sutoro;; 2 January 1935 \u2013 2 March 1987), also known as Lolo Soetoro Mangunharjo or Mangundikardjo, of Indonesia was the stepfather of Barack Obama, the 44th President of the United States."]], ["Albert E. Austin", ["Albert Elmer Austin( November 15, 1877 \u2013 January 26, 1942) was a Republican member of the United States House of Representatives from 1939 to 1941 and member of the Connecticut House of Representatives from 1917 to 1919 and from 1921 to 1923.", "He was the stepfather of Clare Boothe Luce."]], ["Gerald Rudolff Ford", ["Gerald Rudolff Ford( December 9, 1890 \u2013 January 26, 1962) was an American businessman, creator of Ford Industries, and Republican politician who was the stepfather of U.S. President Gerald Ford and for whom Ford legally changed his name."]], ["Albert Visetti", ["Albert Anthony Visetti( 13 May 1846\u201310 July 1928) was a Dalmatian musician who moved to London where he was Professor of Singing at the Royal College of Music, becoming a Fellow in 1921.", "He was the stepfather of the novelist Radclyffe Hall."]], ["Morris Harvey", ["Morris Harvey( 1877\u2013 1944) was a British actor and writer.", "A renowned character actor, he also wrote for the stage, including material for Broadway revues, in which he also appeared.", "He was the stepfather of film director Anthony Harvey."]], ["Jerrold Wexler", ["Jerrold Wexler( June 27, 1924 \u2013 November 10, 1992) was a noted American businessman and film producer.", "He was the brother of cinematographer Haskell Wexler and the stepfather of actress Daryl Hannah."]], ["H\u00e9ctor Barrantes", ["H\u00e9ctor Barrantes Sansoni( 1939\u20131990) was an Argentine polo player.", "He was the stepfather of Sarah, Duchess of York."]]]
supporting_facts: [["Carl Rustad", 2], ["Marie Magdalena Rustad", 2]]
evidences: [["Carl Emil Rustad", "mother", "Marie Magdalena Schou"], ["Marie Magdalena Rustad", "spouse", "Fritz Rustad"]]
answer: Fritz Rustad