question: Who is Ferdinand Iv Of Castile's father?
context: [["H\u00e9ctor Barrantes", ["H\u00e9ctor Barrantes Sansoni( 1939\u20131990) was an Argentine polo player.", "He was the stepfather of Sarah, Duchess of York."]], ["Ferdinand IV, King of the Romans", ["Ferdinand IV( 8 September 1633 \u2013 9 July 1654) was made and crowned King of Bohemia in 1646, King of Hungary and Croatia in 1647, and King of the Romans on 31 May 1653.", "He also served as Duke of Cieszyn.", "Born in Vienna on 8 September 1633, and baptised as\" Ferdinand Franz\", Ferdinand IV was the eldest son of Ferdinand III, Holy Roman Emperor and his first wife Maria Anna, the daughter of Philip III of Spain.", "At a young age, Ferdinand IV took his father's role as Archduke of Austria.", "In 1646, Ferdinand IV became King of Bohemia as he shared the role with his father Emperor Ferdinand III.", "He was crowned on 5 August 1646, and also shared the role of Duke of Cieszyn with Ferdinand III.", "Ferdinand IV also shared the role as King of Hungary and Croatia with his father; his coronation took place on 16 June 1647 in Pressburg, present- day Slovakia.", "After the French attempted to modify the system of the election of King of the Romans, Emperor Ferdinand III made an opportunity of a recent decline in the prestige of France, and was able to install Ferdinand IV as King of the Romans, and\" de facto\" heir to the Holy Roman Empire.", "He was crowned in Ratisbon( Regensburg, present- day south- east Germany) on 18 June 1653 after gaining the position on 31 May 1653.", "However, Ferdinand IV unexpectedly died of smallpox in Vienna on 9 July 1654, and was later succeeded by his brother Leopold I as King of the Romans.", "Prior to his death, it was planned that he would marry Philip IV of Spain's daughter Maria Theresa of Spain, his cousin.", "Upon the death of Ferdinand III, Leopold I was elected as Holy Roman Emperor."]], ["Mar\u00eda de Molina", ["Mar\u00eda Alfonso T\u00e9llez de Meneses (c. 1265 \u2013 1321), known as Mar\u00eda de Molina, was queen consort of Castile and Le\u00f3n from 1284 to 1295 by marriage to Sancho IV of Castile, and served as regent for her minor son Ferdinand IV (1295 - c.1301) and later her grandson Alfonso XI of Castile (1312-1321)."]], ["Alfonso XI of Castile", ["Alfonso XI of Castile( 13 August 131126 March 1350), called the Avenger(\" el Justiciero\"), was the king of Castile, Le\u00f3n and Galicia.", "He was the son of Ferdinand IV of Castile and his wife Constance of Portugal.", "Upon his father's death in 1312, several disputes ensued over who would hold regency, which were resolved in 1313.", "Once Alfonso was declared adult in 1325, he began a reign that would serve to strengthen royal power.", "His achievements include solving the problems of the Gibraltar Strait and the conquest of Algeciras."]], ["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."]], ["Vincenzo Russo", ["Vincenzo Russo( 1770- 1799) was an Italian patriot, who was a leading supporter of the short- lived Parthenopean Republic.", "Captured by the Sanfedista forces, he was soon executed along with many other rebels of the Bourbon rule of Ferdinand IV of Naples."]], ["Maria of Aragon, Queen of Castile", ["Maria of Aragon was the Queen consort of Castile and Leon as the wife of John II of Castile.", "She was the daughter of Ferdinand I of Aragon and Eleanor of Alburquerque."]], ["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."]], ["Ferdinand IV of Castile", ["Ferdinand IV of Castile (6 December 1285 \u2013 7 September 1312) called the Summoned (\"el Emplazado\"), was a King of Castile and Le\u00f3n from 1295 until his death.", "During his minority, his upbringing and the custody of his person were entrusted to his mother, Queen Mar\u00eda de Molina, while his tutorship was entrusted to the \"Infante\" Henry of Castile the Senator, son of King Fernando III of Castile.", "At that time, and also for the rest of his reign, his mother tried to placate the nobility, confronted her son's enemies, and repeatedly prevented Ferdinand IV from being dethroned.", "He had to face the insubordination of the nobility, led at numerous times by his uncle, the \"Infante\" John of Castile, Lord of Valencia de Campos and by Juan N\u00fa\u00f1ez II de Lara, who were supported in some occasions by Juan Manuel, Prince of Villena and grandson of the King Ferdinand III.", "Like his predecessors on the throne, Ferdinand IV continued the \"Reconquista\" and, although he failed to conquer Algeciras in 1309, he captured the city of Gibraltar that same year, and in 1312 the city of Alcaudete was also conquered.", "During the \"Cortes\" of Valladolid of 1312, he promoted the reform of the administration of justice, and that of all areas of administration, while attempting to strengthen the royal authority to the detriment of the nobility.", "He died in Ja\u00e9n on 7 September 1312 aged 26, and his mortal remains are now in the Royal Collegiate Church of Saint Hippolytus."]], ["Alfonso de la Cerda", ["Alfonso de la Cerda, (Valladolid 1270 - \u00c1vila 1333), called the disinherited, was the elder son of Ferdinand de la Cerda and his wife Blanche of France, and was a grandson of Alfonso X of Castile.", "Alfonso and his brother Fernando were candidates for the Castilian-Leonese crown during the reigns of Sancho IV of Castile, Ferdinand IV of Castile and Alfonso XI of Castile.", "In 1331, Alfonso renounced his rights and swore allegiance to Alfonso XI of Castile."]]]
supporting_facts: [["Ferdinand IV of Castile", 1], ["Mar\u00eda de Molina", 0]]
evidences: [["Ferdinand IV of Castile", "mother", "Mar\u00eda de Molina"], ["Mar\u00eda de Molina", "spouse", "Sancho IV of Castile"]]
answer: Sancho IV of Castile