question: Who is the paternal grandfather of Acfred I Of Carcassonne?
context: [["Acfred II of Carcassonne", ["Acfred II( sometimes\" Alfred\")( died 933) was the co-governor of the County of Carcassonne and Raz\u00e8s from 906 to 908 and then count in his own right until his death.", "He was the younger son of Oliba II of Carcassonne and he cogoverned his inheritance with his elder brother Bencion.", "He has been identified with Acfred, Duke of Aquitaine, but this identification is now considered unlikely.", "It is unknown if he was ever married and if he left any descendants.", "He was succeeded by Arsenda, either his daughter or a daughter of Acfred I or of Acfred of Aquitaine."]], ["Acfred I of Carcassonne", ["Acfred I (died 906) was the Count of Raz\u00e8s from 837 and Count of Carcassonne from 877.", "Acfred was the younger son of Oliba I of Carcassonne.", "He inherited Raz\u00e8s on his father's death, while his elder brother Oliba II inherited Carcassonne.", "Acfred and Oliba probably shared authority with each other in their two counties until the elder's death in 877, when Acfred inherited both counties, probably as the regent for his nephew Bencion I, but actually as count in his own right.", "Bencion nevertheless succeeded him on his death.", "Acfred married Adelinda, daughter of Bernard Plantapilosa and sister of William I of Aquitaine.", "He had three sons:"]], ["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."]], ["Lyon Cohen", ["Lyon Cohen( 1868\u20131937) was a Polish- born Canadian businessman and a philanthropist.", "He was the grandfather of singer/ poet Leonard Cohen."]], ["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"]], ["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."]], ["Guisclafred of Carcassonne", ["Guisclafred( died circa 821) was the Count of Carcassonne from 810.", "He was the eldest son and successor of Bello of Carcassonne.", "His brothers were Sunyer I of Ampurias, Sunifred I of Barcelona, and Oliba I of Carcassonne.", "When Bello died, his sons partitioned his domains between them, according to the eldest the chief city of Carcassonne.", "He was succeeded after a short reign by his brother Oliba."]], ["John Westley", ["Rev. John Westley( 1636 \u2013 78) was an English nonconformist minister.", "He was the grandfather of John Wesley( founder of Methodism)."]], ["Oliba I of Carcassonne", ["Oliba I of Carcassonne (died 837) was a count of Carcassonne in the 9th century.", "He was the son of Bello of Carcassonne, and brother (or cousin) of Sunifred I of Barcelona.", "He succeeded to the county of Carcassonne (as well as to the county of Raz\u00e8s) after his brother Guisclafred had died without heirs.", "Oliba married to Elmetruda and Richelda, with whom he had three sons: Oliba II, Sunifred (who was abbot of Lagrasse) and Acfred.", "After his death the county of Carcassonne was ruled by Bernard of Septimania."]], ["Abd al-Muttalib", ["Abd al- Muttalib Shaybah ibn Hashim( c. 497 \u2013 578) was the grandfather of Islamic prophet Muhammad."]]]
supporting_facts: [["Acfred I of Carcassonne", 1], ["Oliba I of Carcassonne", 1]]
evidences: [["Acfred I of Carcassonne", "father", "Oliba I of Carcassonne"], ["Oliba I of Carcassonne", "father", "Bello of Carcassonne"]]
answer: Bello of Carcassonne