question: Who is the paternal grandfather of Baldwin I Rátót?
context: [["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."]], ["Baldwin I R\u00e1t\u00f3t", ["Baldwin (I) from the kindred R\u00e1t\u00f3t (died after 1255) was a Hungarian distinguished nobleman from the \"gens\" R\u00e1t\u00f3t, who served as master of the cupbearers three times.", "His father was Rathold R\u00e1t\u00f3t, isp\u00e1n (\"comes\") of Somogy County in 1203.", "His older brother was Dominic", "I R\u00e1t\u00f3t.", "He served as master of the cupbearers between 1233 and 1234.", "After that he functioned as isp\u00e1n of Moson County in 1235.", "He was appointed master of the cupbearers for the second time in 1235, a position which he held until 1238.", "He was isp\u00e1n of Vas County from 1240 to 1244.", "After that he functioned as isp\u00e1n of Nyitra County in 1244.", "He served as master of the cupbearers for the third time between 1247 and 1254, besides that he held the office of isp\u00e1n of B\u00e1nya from 1247 to 1251.", "He finished his career as isp\u00e1n of Vas County in 1255."]], ["Baldwin II R\u00e1t\u00f3t", ["Baldwin( II) from the kindred R\u00e1t\u00f3t( died after 1283) was a Hungarian distinguished nobleman from the\" gens\" R\u00e1t\u00f3t as the son of Baldwin I R\u00e1t\u00f3t, who served as isp\u00e1n(\" comes\") of Zala County from 1275 to 1276 and in 1276.", "His older brother was Julius II R\u00e1t\u00f3t.", "Baldwin's only son, Lawrence was the ancestor of the R\u00e1t\u00f3ti and Gyulaffy de R\u00e1t\u00f3t noble families."]], ["Rathold R\u00e1t\u00f3t", ["Rathold (I) from the kindred R\u00e1t\u00f3t  was a Hungarian distinguished nobleman from the \"gens\" R\u00e1t\u00f3t, who served as isp\u00e1n (\"comes\") of Somogy County in 1203.", "He was the eldest son of voivode Leustach R\u00e1t\u00f3t.", "As his brother, Julius I R\u00e1t\u00f3t had no successors, Rathold was the ancestor of the Gyulafi branch of the R\u00e1t\u00f3t clan."]], ["Abd al-Muttalib", ["Abd al- Muttalib Shaybah ibn Hashim( c. 497 \u2013 578) was the grandfather of Islamic prophet Muhammad."]], ["John Westley", ["Rev. John Westley( 1636 \u2013 78) was an English nonconformist minister.", "He was the grandfather of John Wesley( founder of Methodism)."]], ["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."]], ["Lyon Cohen", ["Lyon Cohen( 1868\u20131937) was a Polish- born Canadian businessman and a philanthropist.", "He was the grandfather of singer/ poet Leonard Cohen."]], ["Guillaume Wittouck", ["Guillaume Wittouck( 1749- 1829) was a Belgian lawyer and High Magistrate.", "He was the Grandfather of industrialist Paul Wittouck."]]]
supporting_facts: [["Baldwin I R\u00e1t\u00f3t", 1], ["Rathold R\u00e1t\u00f3t", 1]]
evidences: [["Baldwin (I) from the kindred R\u00e1t\u00f3t", "father", "Rathold R\u00e1t\u00f3t"], ["Rathold R\u00e1t\u00f3t", "father", "Leustach R\u00e1t\u00f3t"]]
answer: Leustach Rátót