question: Who is the paternal grandmother of Eric I Of Denmark?
context: [["Princess Caroline-Mathilde of Denmark", ["Princess Caroline- Mathilde of Denmark( 27 April 1912 \u2013 12 December 1995) was a daughter of Prince Harald of Denmark and granddaughter of King Frederick VIII of Denmark.", "As the wife of Knud, Hereditary Prince of Denmark, she became Hereditary Princess of Denmark."]], ["Tjuyu", ["Tjuyu( sometimes transliterated as Thuya or Thuyu) was an Egyptian noblewoman and the mother of queen Tiye, and the wife of Yuya.", "She is the grandmother of Akhenaten, and great grandmother of Tutankhamun."]], ["Eric I of Denmark", ["Eric I (\u2013 10 July 1103), also known as Eric the Good , was King of Denmark following his brother Olaf I Hunger in 1095.", "He was a son of Sweyn II.", "His mother's identity is unknown.", "He married Boedil Thurgotsdatter."]], ["Sophie of Pomerania, Duchess of Pomerania", ["Sophia of Pomerania- Stolp( 1435 \u2013 24 August 1497), was a Duchess of Pomerania by birth, and married to Eric II, Duke of Pomerania.", "Sophia was the daughter of Bogislaw IX, Duke of Pomerania and Maria of Masovia.", "In 1446, her father died and was succeeded by his cousin, Eric of Pomerania, former King of Denmark, Norway and Sweden.", "Sophia became the heir of Eric of Pomerania's private fortune.", "In 1451, Sophia was married to Eric of Pomerania- Wolgast, making her spouse the heir of Eric of Pomerania's territories, while Sophia remained the heir of Eric of Pomerania's private fortune.", "At the death of Eric of Pomerania in 1459, Sophia's husband united Pomerania through the inheritance of Pomerania- Stolp and Pomerania- R\u00fcgenwalde by his marriage, while Sophia became the sole possessor of the vast fortune brought by Eric of Pomerania from his former kingdoms in Scandinavia, as well as the wealth he had acquired by his piracy activity on Gotland.", "As Eric refused to allow Sophia any of the political power over the territories he acquired through her, which she felt she was entitled to, the couple separated.", "Sophia moved to R\u00fcgenwalde Castle with her children and her lover, Hans of Maszerski.", "In 1470, she refused to finance her husband's war with Brandenburg.", "She was widowed in 1474.", "According to an old legend, she was to have poisoned her sons Wratislaw and Casimir, but when she tried to the same with her son Bogislaw with a poisoned sandwich, he was warned by his jester.", "The sandwich was given to a dog, who died, after which Sophia was to have fled to Danzig."]], ["Eric III of Denmark", ["Eric III Lamb( \u2013 27 August 1146) was the King of Denmark from 1137 until 1146.", "He was the grandson of Eric I of Denmark and the nephew of Eric II of Denmark, whom he succeeded on the throne.", "He abdicated in 1146, as the first and only Danish monarch to do so.", "His succession led to a period of civil war between Sweyn III, Canute V, and Valdemar I."]], ["Eric VI of Denmark", ["Eric VI\" Menved\"( 1274 \u2013 13 November 1319) was King of Denmark( 1286\u20131319).", "A son of Eric V of Denmark and Agnes of Brandenburg, he became king in 1286 at age 12, when his father was murdered on 22 November by unknown assailants.", "On account of his age, his mother ruled for him until 1294."]], ["Hubba bint Hulail", ["Hubba bint Hulail was the grandmother of Hashim ibn' Abd Manaf, thus the great- great- great- grandmother of the Islamic\" Nab\u012b\"( Prophet) Muhammad ibn Abdullah."]], ["Hannah Arnold", ["Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children."]], ["Eric II of Denmark", ["Eric II the Memorable( \u2013 18 September 1137) was king of Denmark between 1134 and 1137.", "Eric was an illegitimate son of Eric I of Denmark, who ruled Denmark from 1095 to 1103.", "Eric the Memorable rebelled against his uncle Niels of Denmark, and was declared king in 1134.", "He punished his adversaries severely, and rewarded his supporters handsomely.", "He was killed by a subject in 1137 and was promptly succeeded by his nephew Eric III of Denmark."]], ["Sweyn II of Denmark", ["Sweyn II Estridsson  (\u2013 28 April 1076) was King of Denmark from 1047 until his death in 1076.", "He was the son of Ulf Thorgilsson and Estrid Svendsdatter, and the grandson of King Sweyn I Forkbeard through his mother's line.", "He was married three times, and fathered 20 children or more out of wedlock, including the five future kings Harald III Hen, Canute IV", "the Saint, Oluf", "I Hunger, Eric", "I Evergood, and Niels.", "He was courageous in battle, but did not have much success as a military commander.", "His skeleton reveals that he was a tall, powerfully built man who walked with a limp."]]]
supporting_facts: [["Eric I of Denmark", 1], ["Sweyn II of Denmark", 1]]
evidences: [["Eric I of Denmark", "father", "Sweyn II"], ["Sweyn II", "mother", "Estrid Svendsdatter"]]
answer: Estrid Svendsdatter