question: Who is older, Nihat Nikerel or Ralph Duff?
context: [["Jovan Markovski", ["Jovan Markovski( born March 28, 1988) is a Macedonian professional basketball small forward who last played for Vardar.", "He is older brother of Gorjan Markovski who is also basketball player and plays for Feni Industries"]], ["Fran\u00e7ois van der Merwe", ["Fran\u00e7ois van der Merwe is a South African professional rugby union player.", "He plays at lock for Lyon Olympique in the Top 14.", "He is older brother of Flip van der Merwe"]], ["Rodulfus Glaber", ["Rodulfus or Ralph Glaber( which means\" the Smooth\" or\" the Bald\", 985\u20131047) was an 11th century French monk and chronicler."]], ["Ralph Duff", ["Ralph Duff( 20 May 1908 \u2013 23 March 1951) was an Australian rules footballer who played with Hawthorn in the Victorian Football League( VFL)."]], ["Nihat Nikerel", ["Nihat Nikerel( 05 February 1950 \u2013 26 September 2009) was a Turkish actor, best known for his role in the crime drama series\" Kurtlar Vadisi\"."]], ["Filip Arsenijevi\u0107", ["Filip Arsenijevi\u0107( born 2 September 1983) is a Serbian footballer who plays for TSC Ba\u010dka Topola.", "He is older brother of Nemanja Arsenijevi\u0107."]], ["Ralph Eleaser Whiteside Earl", ["Ralph Eleaser Whiteside Earl( born 1785- 88; died Nashville, Tennessee September 16, 1838), also known as Ralph E. W. Earl or Ralph Eleazer Whiteside Earl, was an American painter known as the\" court painter\" to President Andrew Jackson.", "He also painted the portrait of Rachel Jackson."]], ["Ralph de Mortimer", ["Ranulph or Ralph de Mortimer( before 1198 to 6 August 1246) was the second son of Roger de Mortimer and Isabel de Ferrers of Wigmore Castle in Herefordshire.", "He succeeded his elder brother before 23 November 1227 and built Cefnllys and Knucklas castles in 1240."]], ["Ralph de Spigurnell", ["Admiral of the Fleet Sir Ralph de Spigurnell or Ralph Spigurnell( c. 1317-1373), was a Medieval knight, diplomatic envoy and English naval commander who was appointed Admiral of all the Fleets of the English Navy, Warden of the Cinque Ports and Constable of Dover Castle who served under King Edward III of England from 1337 to 1373."]], ["Ralph Staveley", ["Sir Ralph Staley or Ralph de Stavelegh( c.1362 -c.1420) was lord of the Manor of Staley Hall, Stalybridge, England.", "His stone effigy is to be found in St Michael and All Angels Church, Mottram."]]]
supporting_facts: [["Nihat Nikerel", 0], ["Ralph Duff", 0]]
evidences: [["Nihat Nikerel", "date of birth", "05 February 1950"], ["Ralph Duff", "date of birth", "20 May 1908"]]
answer: Ralph Duff