question: Who is the paternal grandfather of Diego Fernández De Oviedo?
context: [["Diego Fern\u00e1ndez de C\u00e1ceres y Ovando", ["Diego Fern\u00e1ndez de C\u00e1ceres y Ovando", "( \u2013 Monle\u00f3n, aft.", "February 2, 1487) was a Spanish military and nobleman."]], ["Diego Fern\u00e1ndez", ["Diego Fern\u00e1ndez was a Spanish adventurer and historian of the 16th century."]], ["Diego Fern\u00e1ndez de Villal\u00e1n", ["Diego Fern\u00e1ndez de Villal\u00e1n( died 7 Jul 1556) was a Roman Catholic prelate who served as the fourth Bishop of Almer\u00eda( 1523 \u2013 1556)."]], ["Mariana Fern\u00e1ndez de C\u00f3rdoba y Ayala", ["Mariana Fern\u00e1ndez de C\u00f3rdoba y Ayala( c. 1394 \u2013 1431), also known as\" Mariana de Ayala C\u00f3rdoba y Toledo\", was the fourth Lady of Casarrubios del Monte in the province of Toledo.", "She was the daughter of Diego Fern\u00e1ndez de C\u00f3rdoba y Carrillo, first Lord of Baena, and In\u00e9s Ayala y Toledo, third Lady of Casarrubios del Monte."]], ["Diego Fern\u00e1ndez de Cevallos", ["Diego Fern\u00e1ndez de Cevallos Ramos( born 16 March 1941) is a Mexican politician affiliated with the conservative National Action Party( PAN).", "He was a presidential candidate in the 1994 election and President of the Mexican Senate."]], ["Diego Fern\u00e1ndez de la Cueva, 1st Viscount of Huelma", ["Diego Fern\u00e1ndez de la Cueva, 1st Viscount of Huelma( died 26 November 1473) was a Spanish nobleman."]], ["Guillermo Fern\u00e1ndez de Soto", ["Guillermo Fern\u00e1ndez de Soto"]], ["Diego Fern\u00e1ndez de Oviedo", ["Diego Fern\u00e1ndez (\"fl.\" 1020 \u2013 \"c.\" 1046), also known as Diego Fern\u00e1ndez de Oviedo, was a member of one of the most noble lineages of the Kingdom of Le\u00f3n as the son of Fernando Fla\u00ednez and Elvira Pel\u00e1ez, daughter of count Pelayo Rodr\u00edguez.", "He was the second cousin of King Alfonso VI since both shared the same great-grandfather, Count Fernando Berm\u00fadez de Cea.", "Distinguished with the title of Count at an early age, Diego was the father of Jimena D\u00edaz, wife of Rodrigo D\u00edaz de Vivar \"El Cid\"."]], ["Diego Fern\u00e1ndez de Ovando", ["\" Fray\" Diego Fern\u00e1ndez de Ovando was a Spanish military and nobleman."]], ["Fernando Fla\u00ednez", ["Fernando Fla\u00ednez (fl.) was a powerful magnate from the Kingdom of Le\u00f3n, member of the aristocratic lineage of the Fla\u00ednez.", "His parents were Fla\u00edn Mu\u00f1oz and his wife Justa Fern\u00e1ndez, daughter of count Fernando Berm\u00fadez de Cea.", "He was the paternal grandfather of Jimena D\u00edaz, wife of Rodrigo D\u00edaz de Vivar \"El Cid\", and the direct ancestor of the important medieval noble lineage of the Osorios.", "He married Elvira Pel\u00e1ez, daughter of Pelayo Rodr\u00edguez and Gotina Fern\u00e1ndez de Cea, with whom he had at least seven children: Fla\u00edn, Oveco, Justa, Pedro, Pelayo, Mu\u00f1o and Diego.", "He was the \"tenente\" of Aguilar and documented with the title of count as of 1028.", "Jointly with his son, Fla\u00edn Fern\u00e1ndez, he governed the city of Le\u00f3n until 1038 when the kingdom was already under the control of King Sancho III of Pamplona."]]]
supporting_facts: [["Diego Fern\u00e1ndez de Oviedo", 0], ["Fernando Fla\u00ednez", 1]]
evidences: [["Diego Fern\u00e1ndez de Oviedo", "father", "Fernando Fla\u00ednez"], ["Fernando Fla\u00ednez", "father", "Fla\u00edn Mu\u00f1oz"]]
answer: Flaín Muñoz