question: Who is Theresa Of Portugal, Queen Of León's maternal grandfather?
context: [["Dulce of Aragon", ["Dulce of Aragon (or of Barcelona; ; 1160 \u2013 1 September 1198) was Queen consort to King Sancho I of Portugal.", "As the eldest daughter of Ramon Berenguer IV, Count of Barcelona and his wife, Queen Petronila of Aragon, she was the sister of the future King Alfonso II of Aragon.", "Her bethrothal to \"infante\" Sancho, son of Afonso Henriques, the first king of Portugal, was celebrated when she was eleven years old and the marriage in 1174.", "Not much is known about her life prior to her arrival in Portugal or of the wedding tokens she received upon her marriage.", "\"A beautiful and excellent lady, quiet and modest, her personality coinciding with her name,\" Dulce was used as a commodity to seal an alliance which aimed to \"strengthen Portugal and to contain the expansionism of Castile and Le\u00f3n\" and she played the role that was expected of her as a wife and as the mother of numerous children.", "At the same time, the marriage compensated for the broken engagement of her husband's sister, Infanta Mafalda with her brother, the future King Alfonso II of Aragon.", "With the death of King Afonso Henriques in 1185, her husband ascended the throne and she became Queen consort of Portugal.", "In his first will, executed in 1188, her husband gave her the income from Alenquer, of the lands along the banks of the Vouga River, of Santa Maria da Feira and of Oporto.", "Dulce did not live long after the birth of her last two daughters, Branca and Berengaria, probably twins, and died in 1198 probably succumbing to the plague and weakened by the successive childbirths.", "She was buried in the Monastery of Santa Cruz in Coimbra."]], ["Lyon Cohen", ["Lyon Cohen( 1868\u20131937) was a Polish- born Canadian businessman and a philanthropist.", "He was the grandfather of singer/ poet Leonard Cohen."]], ["John Westley", ["Rev. John Westley( 1636 \u2013 78) was an English nonconformist minister.", "He was the grandfather of John Wesley( founder of Methodism)."]], ["Kaya Alp", ["Kaya Alp was, according to Ottoman tradition, the son of K\u0131z\u0131l Bu\u011fa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertu\u011frul, and the great grandfather of the Ottoman Empire founder, Osman I."]], ["Henry Krause", ["Henry J.\" Red\" Krause, Jr.( August 28, 1913 \u2013 February 20, 1987) was an American football offensive lineman in the National Football League for the Brooklyn Dodgers and the Washington Redskins.", "He played college football at St. Louis University.", "He is the grandfather of Jennifer Krause", "He is the great grandfather of Payton Hoeing"]], ["Afonso, Prince of Portugal (1526)", ["Afonso, Prince of Portugal was the first son of king John III of Portugal and his queen, Catherine of Austria.", "He was the Prince of Portugal but died in the same year he was born, in 1526."]], ["Fred Le Deux", ["Frederick\" Fred\" Le Deux( born 4 December 1934) was an Australian rules footballer who played with Geelong in the Victorian Football League( VFL).", "He is the grandfather of Tom Hawkins."]], ["Theresa of Portugal, Queen of Le\u00f3n", ["Theresa of Portugal (1176 \u2013 18 June 1250) was Queen of L\u00e9on as the first wife of King Alfonso IX of Le\u00f3n.", "She was born the oldest daughter of Sancho I of Portugal and Dulce of Aragon.", "When her marriage was annulled because of consanguinity, she retired to a convent.", "She was beatified in 1705."]], ["Philip May", ["Philip John May( born 18 September 1957) is a British investment relationship manager and Conservative Party activist who is the husband of Theresa May, the former Prime Minister of the United Kingdom."]], ["Abd al-Muttalib", ["Abd al- Muttalib Shaybah ibn Hashim( c. 497 \u2013 578) was the grandfather of Islamic prophet Muhammad."]]]
supporting_facts: [["Theresa of Portugal, Queen of Le\u00f3n", 1], ["Dulce of Aragon", 1]]
evidences: [["Theresa of Portugal", "mother", "Dulce of Aragon"], ["Dulce of Aragon", "father", "Ramon Berenguer IV"]]
answer: Ramon Berenguer IV