question: Who is Viacheslav I Of Kiev's maternal grandfather?
context: [["Anastasia of Kiev", ["Anastasia of Kiev( 1023 \u2013 1074/1096) was Queen of Hungary by marriage to King Andrew the White.", "She was the eldest daughter of Grand Prince Yaroslav I the Wise of Kiev and Ingigerd of Sweden, and the older sister of Anne of Kiev, Queen consort of Henry I of France."]], ["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."]], ["Maria Mstislavna of Kiev", ["Maria Mstislavna of Kiev( died 1179), was a Grand Princess consort of Kiev by marriage to Prince Vsevolod II of Kiev.", "She was the daughter of Mstislav I of Kiev and Christina Ingesdotter of Sweden.", "Her marriage was arranged in 1116 to facilitate better relations between her father and spouse, who were long standing enemies.", "During the reign of her spouse, she was known for her diplomatic ability, and often asked to mediate between her husband and brothers.", "She is believed to be one of the founders of St. Cyril's Monastery."]], ["Gytha of Wessex", ["Gytha of Wessex (born c. 1053/1061 - died 1098 or 1107) was one of several daughters of Harold Godwinson, the last Anglo-Saxon King of England, by his consort, Edyth Swannesha.", "Through marriage to Vladimir II Monomakh Gytha became a Grand Princess consort of Kievan Rus'."]], ["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."]], ["Guillaume Wittouck", ["Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.", "He was the Grandfather of industrialist Paul Wittouck."]], ["Lyon Cohen", ["Lyon Cohen( 1868\u20131937) was a Polish- born Canadian businessman and a philanthropist.", "He was the grandfather of singer/ poet Leonard Cohen."]], ["Viacheslav I of Kiev", ["Viacheslav Vladimirovich  (1083 \u2013 2 February 1154) was a Prince of Smolensk (1113\u20131125), Turov (1125\u20131132, 1134\u20131146), Pereyaslavl (1132\u20131134, 1142), Peresopnytsia (1146\u20131149), Vyshgorod (1149\u20131151) and Grand Prince of Kiev (1139, 1151\u20131154).", "He was a son of Vladimir Monomakh and Gytha of Wessex.", "On 18 February 1139 he succeeded his brother Yaropolk II of Kiev as Grand Prince, but was driven out in March by Vsevolod II of Kiev.", "He later ruled Kiev jointly with his nephew Iziaslav II of Kiev and died not long after Iziaslav in late 1154 or early 1155 and is buried in the St. Sophia Cathedral in Kiev.", "His only son, Michael Viacheslavovich, had predeceased him in 1129."]], ["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."]]]
supporting_facts: [["Viacheslav I of Kiev", 1], ["Gytha of Wessex", 0]]
evidences: [["Viacheslav I of Kiev", "mother", "Gytha of Wessex"], ["Gytha of Wessex", "father", "Harold Godwinson"]]
answer: Harold Godwinson