question: Who is the maternal grandmother of John Woodville?
context: [["Purnima (Hindi actress)", ["Purnima Das Verma( born Meherbhano Mohammad Ali) was an Indian film actress who worked predominantly in Hindi language films.", "She is the grandmother of actor Emraan Hashmi."]], ["Jacquetta of Luxembourg", ["Jacquetta of Luxembourg, Countess Rivers (1415/16 \u2013 30 May 1472) was the eldest daughter of Peter I of Luxembourg, Count of Saint-Pol, Conversano and Brienne, and his wife Margaret of Baux (Margherita del Balzo of Andria).", "She was a prominent, though often overlooked, figure in the Wars of the Roses.", "Through her short-lived first marriage to the Duke of Bedford, brother of King Henry V, she was firmly allied to the House of Lancaster.", "However, following the emphatic Lancastrian defeat at the Battle of Towton, she and her second husband Richard Woodville sided closely with the House of York.", "Three years after the battle and the accession of Edward IV of England, Jacquetta's eldest daughter Elizabeth Woodville married him and became Queen consort of England.", "Jacquetta bore", "Woodville 14 children and stood trial on charges of witchcraft, of which she was exonerated."]], ["John Woodville", ["Sir John Woodville (c.1445 \u2013 12 August 1469) was the second son, and fourth child, of Richard Woodville, 1st Earl Rivers, and Jacquetta of Luxembourg.", "In January 1465, Woodville's sister, Elizabeth, queen consort of King Edward IV of England, procured his marriage to Catherine Neville, Dowager Duchess of Norfolk (born c. 1400 \u2013 died after 1483), who was aunt to the powerful Richard Neville, Earl of Warwick.", "As the Duchess was about 65 years of age at the time and Woodville was only 19, the marriage was seen by all, particularly Warwick, as an indecent grasp for money and power by the Woodville family.", "One chronicler described it as a maritagium diabolicum (the diabolical marriage).", "In 1465, John was appointed Knight of the Order of the Bath by his brother-in-law, the King.", "In 1469, Woodville and his father accompanied King Edward on a march north, to put down what was thought to be a minor rebellion supporting Edward's brother the Duke of Clarence as the legitimate king.", "Before they met the rebels both Clarence and Warwick had announced their support for the rebellion; by the time the King met the rebels, the rebel force was far stronger than his.", "In a parley, the rebels told the King that they had no fight with him but advised him to distance himself from the Woodvilles.", "In no position to argue, the King sent the Woodville party away.", "Woodville and Rivers went first to the Rivers' house at Grafton and from there made their way westwards towards Wales.", "They were captured by Warwick's men on the western bank of the Severn and taken to Coventry in Warwickshire.", "Before leaving Calais to support the uprising, Warwick had published a manifesto citing the Woodvilles in general, and the Earl and John Woodville specifically, as his reason for supporting Clarence against the King.", "The publication of this manifesto was deemed, by Warwick, to justify the execution of Rivers and his son.", "They were beheaded on 12 August and their heads placed on spikes above the gates of Coventry.", "Woodville died childless."]], ["Diana Guardato", ["Diana Guardato was a member of the aristocratic Patrician Guardato family, and had three children with King Ferdinand I: Diana Guardato is the 16th- Great Grandmother of His Royal Highness Albert II of Belgium, 15th- Great Grandmother of His Majesty Juan Carlos", "I of Spain, 17th- Great Grandmother of Philippe of Belgium, 14th- Great Grandmother of His Majesty Manuel II of Portugal, 16th- Great Grandmother of Grand Duke Henri, as well as many others."]], ["Mona Hopton Bell", ["Mona Hopton Bell( 1867- 1940) was a British artist, best known for her portraits of civic figures.", "She was the grandmother of the painter Jean H. Bell."]], ["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."]], ["Kaoru Hatoyama", ["After the elections of 2009, she became more widely known as the grandmother of Prime Minister Yukio Hatoyama and his politician brother Kunio Hatoyama."]], ["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."]], ["Hannah Arnold", ["Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children."]], ["Anne Denman", ["Anne Denman( 1587\u20131661) was born in Olde Hall, Retford, Nottinghamshire.", "Through a fortunate second marriage with Thomas Aylesbury, she became the grandmother of Lady Anne Hyde, Duchess of York and great- grandmother of Queen Mary II and Queen Anne."]]]
supporting_facts: [["John Woodville", 0], ["Jacquetta of Luxembourg", 0]]
evidences: [["John Woodville", "mother", "Jacquetta of Luxembourg"], ["Jacquetta of Luxembourg", "mother", "Margherita del Balzo"]]
answer: Margherita del Balzo