question: Who is the maternal grandfather of Rudolph Of France?
context: [["Lyon Cohen", ["Lyon Cohen( 1868\u20131937) was a Polish- born Canadian businessman and a philanthropist.", "He was the grandfather of singer/ poet Leonard Cohen."]], ["Matilda of Habsburg", ["Matilda of Habsburg or Melchilde( 1253 in Rheinfelden \u2013 23 December 1304 in Munich, Bavaria) was the eldest daughter of Rudolph I of Germany and Gertrude of Hohenburg.", "She was regent of Bavaria in the minority of her son."]], ["John Westley", ["Rev. John Westley( 1636 \u2013 78) was an English nonconformist minister.", "He was the grandfather of John Wesley( founder of Methodism)."]], ["Abd al-Muttalib", ["Abd al- Muttalib Shaybah ibn Hashim( c. 497 \u2013 578) was the grandfather of Islamic prophet Muhammad."]], ["Willa of Burgundy", ["Willa of Burgundy( \u2013 after 936) was a member of the Elder House of Welf.", "By birth she was a daughter of Rudolph I of Burgundy, king of Upper Burgundy.", "Through marriage Boso Willa became countess of Avignon and Arles, and then margravine of Tuscany."]], ["Rudolph of France", ["Rudolph or Rudolf (c. 890 \u2013 14/15 January 936) was the elected King of France from 923 until his death in 936.", "Prior to his election as king, he was Duke of Burgundy and Count of Troyes from 921.", "He was the son of Richard, Duke of Burgundy, and Adelaide of Auxerre, and inherited the Duchy of Burgundy from his father.", "He married Emma of France, daughter of king Robert I of France.", "He is frequently confused with his uncle", "Rudolph I of Burgundy.", "Rudolph was elected king of West Francia in 923 by an assembly of Frankish nobles, to succeed his father-in-law", "Robert I who was killed at the Battle of Soissons against the deposed king Charles the Simple.", "He was crowned by Walter, Archbishop of Sens at", "St.", "M\u00e9dard in Soissons on Sunday, 13 July 923.", "On assuming the crown he passed the Duchy of Burgundy to his younger brother Hugh the Black."]], ["Robert L. May", ["Robert L. May( July 27, 1905 \u2013 August 10, 1976) was the creator of Rudolph the Red- Nosed Reindeer."]], ["Adelaide of Auxerre (born c. 870)", ["Adelaide of Auxerre (born between 865 - 870) was a Duchess consort of Burgundy in the Middle Ages.", "She was the daughter of Conrad II, Duke of Transjurane Burgundy and his wife Waldrada of Worms.", "In 888, she married Richard, Duke of Burgundy.", "They had probably three or five children :"]], ["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."]], ["Prithvipati Shah", ["Prithvipati Shah( ?\u20131716) was the king of the Gorkha Kingdom in the Indian subcontinent, present- day Nepal.", "He was the grandfather of Nara Bhupal Shah."]]]
supporting_facts: [["Rudolph of France", 2], ["Adelaide of Auxerre (born c. 870)", 1]]
evidences: [["Rudolph of France", "mother", "Adelaide of Auxerre"], ["Adelaide of Auxerre", "father", "Conrad II, Duke of Transjurane Burgundy"]]
answer: Conrad II, Duke of Transjurane Burgundy