question: Who is the maternal grandfather of Infanta Elena, Duchess Of Lugo?
context: [["John Westley", ["Rev. John Westley( 1636 \u2013 78) was an English nonconformist minister.", "He was the grandfather of John Wesley( founder of Methodism)."]], ["Infanta Elena, Duchess of Lugo", ["Infanta Elena, Duchess of Lugo", "(Elena Mar\u00eda Isabel Dominica de Silos de Borb\u00f3n y de Grecia; born 20 December 1963) is the first child and elder daughter of King Juan Carlos I of Spain and Queen Sof\u00eda of Spain, and third in the line of succession to the Spanish throne.", "She has a younger sister, Infanta Cristina, and a younger brother, King Felipe VI.", "Infanta Elena has represented her family abroad on several occasions, having travelled to Germany, the United Kingdom, the United States, Argentina, Japan, Peru, and the Philippines."]], ["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."]], ["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."]], ["Lyon Cohen", ["Lyon Cohen( 1868\u20131937) was a Polish- born Canadian businessman and a philanthropist.", "He was the grandfather of singer/ poet Leonard Cohen."]], ["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."]], ["Queen Sof\u00eda of Spain", ["Sophia of Greece and Denmark (born 2 November 1938) is a member of the Spanish royal family who served as Queen of Spain during the reign of her husband, King Juan Carlos", "I, from 1975 to 2014.", "Queen Sof\u00eda is the first child of King Paul of Greece and Frederica of Hanover.", "As her family was forced into exile during the Second World War, she spent part of her childhood in South Africa, returning to Greece in 1946.", "She completed her secondary education in a boarding school in Germany before returning to Greece where she specialised in childcare, music and archaeology.", "She married Juan Carlos, son of the Spanish pretender Infante Juan, on 14 May 1962 with whom she has had three children: Elena, Cristina, and Felipe.", "She became queen upon her husband's accession in 1975.", "On 19 June 2014, Juan Carlos abdicated in favor of their son Felipe VI."]], ["Henry Bryant (naturalist)", ["Henry Bryant( May 12, 1820 \u2013 February 2, 1867) was an American physician and naturalist.", "He was the grandfather of Henry Bryant Bigelow."]], ["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: [["Infanta Elena, Duchess of Lugo", 1], ["Queen Sof\u00eda of Spain", 2]]
evidences: [["Infanta Elena", "mother", "Queen Sof\u00eda of Spain"], ["Queen Sof\u00eda of Spain", "father", "Paul of Greece"]]
answer: Paul of Greece