question: Who is the paternal grandfather of Anthony Dryden Marshall?
context: [["Lyon Cohen", ["Lyon Cohen( 1868\u20131937) was a Polish- born Canadian businessman and a philanthropist.", "He was the grandfather of singer/ poet Leonard Cohen."]], ["Henry Krause", ["Henry J.\" Red\" Krause, Jr.( August 28, 1913 \u2013 February 20, 1987) was an American football offensive lineman in the National Football League for the Brooklyn Dodgers and the Washington Redskins.", "He played college football at St. Louis University.", "He is the grandfather of Jennifer Krause", "He is the great grandfather of Payton Hoeing"]], ["Fred Le Deux", ["Frederick\" Fred\" Le Deux( born 4 December 1934) was an Australian rules footballer who played with Geelong in the Victorian Football League( VFL).", "He is the grandfather of Tom Hawkins."]], ["Anthony Dryden Marshall", ["Anthony Dryden Marshall (born Anthony Dryden Kuser; May 30, 1924 \u2013 November 30, 2014) was an American theatrical producer and C.I.A. intelligence officer and ambassador.", "Marshall died on November 30, 2014, at the age of 90."]], ["Abd al-Muttalib", ["Abd al- Muttalib Shaybah ibn Hashim( c. 497 \u2013 578) was the grandfather of Islamic prophet Muhammad."]], ["Zhao Shoushan", ["Zhao Shoushan( 12 November 1894 \u2013 20 June 1965) was a KMT general and later Chinese Communist Party politician.", "He is the grandfather of Zhao Leji."]], ["John Westley", ["Rev. John Westley( 1636 \u2013 78) was an English nonconformist minister.", "He was the grandfather of John Wesley( founder of Methodism)."]], ["John Dryden Kuser", ["John Dryden Kuser also known as Dryden Kuser (September 24, 1897 \u2013 March 3, 1964) was a New Jersey politician and a member of an influential New Jersey family.", "He was the son of Colonel Anthony R. Kuser and grandson of Senator and Prudential Insurance founder John Fairfield Dryden."]], ["Francis Martin Drexel", ["Francis Martin Drexel( April 7, 1792 \u2013 June 5, 1863) was a Philadelphia banker and artist.", "He was the father of Anthony Joseph Drexel, the founder of Drexel University and the grandfather of Saint Katherine Drexel."]], ["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."]]]
supporting_facts: [["Anthony Dryden Marshall", 0], ["John Dryden Kuser", 1]]
evidences: [["Anthony Dryden Marshall", "father", "Dryden Kuser"], ["Dryden Kuser", "father", "Anthony R. Kuser"]]
answer: Anthony R. Kuser