question: Who is the paternal grandfather of Władysław I Herman?
context: [["Casimir I the Restorer", ["Casimir I the Restorer (b. Krak\u00f3w, 25 July 1016 \u2013 d. Pozna\u0144, 28 November 1058), was Duke of Poland of the Piast dynasty and the \"de jure\" monarch of the entire country from 1034 until his death.", "He was the only son of Mieszko II Lambert by his wife Richeza, daughter of Count Palatine Ezzo of Lotharingia (of the Ezzonids) and granddaughter of Emperor Otto II.", "Casimir is known as \"the Restorer\" because he managed to reunite all parts of the Polish Kingdom after a period of turmoil.", "He reinstated Masovia, Silesia and Pomerania into his realm.", "However, he failed to crown himself King of Poland, mainly because of internal and external threats to his rule."]], ["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."]], ["W\u0142adys\u0142aw I Herman", ["W\u0142adys\u0142aw", "I Herman (1044 \u2013 4 June 1102) was a Duke of Poland from 1079 until his death.", "He was the second son of", "Casimir I the Restorer by his wife Maria Dobroniega, daughter of Vladimir", "the Great, Grand Duke of Kiev."]], ["Lyon Cohen", ["Lyon Cohen( 1868\u20131937) was a Polish- born Canadian businessman and a philanthropist.", "He was the grandfather of singer/ poet Leonard Cohen."]], ["Fujiwara no Nagara", [", also known as Fujiwara no Nagayoshi, was a Japanese statesman, courtier and politician of the early Heian period.", "He was the grandfather of Emperor Y\u014dzei."]], ["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."]], ["Guillaume Wittouck", ["Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.", "He was the Grandfather of industrialist Paul Wittouck."]], ["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."]], ["Eckhard (bishop of Pozna\u0144)", ["Eckhard, Bishop of Pozna\u0144 was an 11th- 12th century Catholic Bishop of German descent known from records in the 16th century of the Abbey of Saints Simon and Judas in Goslar.", "Before being appointed Bishop he was provost of the Abbey under Franko.", "He served as the Bishop at the end of the reign of W\u0142adys\u0142aw Herman who died 1102 AD."]]]
supporting_facts: [["W\u0142adys\u0142aw I Herman", 3], ["Casimir I the Restorer", 1]]
evidences: [["W\u0142adys\u0142aw I Herman", "father", "Casimir I the Restorer"], ["Casimir I the Restorer", "father", "Mieszko II Lambert"]]
answer: Mieszko II Lambert