question: Who is Titus Tarquinius's paternal grandfather?
context: [["Titus Tarquinius", ["Titus was the eldest son of Lucius Tarquinius Superbus, the last king of Rome.", "During his father's reign, he accompanied his younger brother Aruns and his cousin Lucius Junius Brutus to consult the Oracle at Delphi to have interpreted an omen witnessed by the king.", "In 509 BC, upon the overthrow of the monarchy, Titus went into exile at Caere with his father and his brother Aruns.", "In around 496 BC he fought with his father and the Latins against Rome at the Battle of Lake Regillus.", "During the battle, Marcus Valerius Volusus, who had been the Roman consul in 505 BC, charged Titus in an attempt to slay him, but was himself killed by Titus' men."]], ["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."]], ["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)."]], ["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."]], ["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."]], ["Lucius Tarquinius Superbus", ["Lucius Tarquinius Superbus (died 495 BC) was the legendary seventh and final king of Rome, reigning from 535 BC until the popular uprising in 509 BC that led to the establishment of the Roman Republic.", "He is commonly known as Tarquin the Proud, from his cognomen \"Superbus\" (Latin for \"proud, arrogant, lofty\").", "Ancient accounts of the regal period mingle history and legend.", "Tarquin was said to have been the son or grandson of Lucius Tarquinius Priscus, the fifth king of Rome, and to have gained the throne through the murders of both his wife and his elder brother, followed by the assassination of his predecessor, Servius Tullius.", "His reign is described as a tyranny that justified the abolition of the monarchy."]], ["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."]]]
supporting_facts: [["Titus Tarquinius", 0], ["Lucius Tarquinius Superbus", 3]]
evidences: [["Titus was the eldest son of Lucius Tarquinius", "father", "Lucius Tarquinius Superbus"], ["Lucius Tarquinius Superbus", "father", "Lucius Tarquinius Priscus"]]
answer: Lucius Tarquinius Priscus