question: Who is younger, Bernard Chambaz or Tibor Pézsa?
context: [["Tibor P\u00e9zsa", ["Tibor P\u00e9zsa( born 15 November 1935) is a retired Hungarian fencer.", "He competed in the individual and team sabre events at the 1964, 1968 and 1972 Olympics and won one gold and three bronze medals; he won nine more medals at the world championships in 1962 \u2013 1971."]], ["Anton Shunto", ["Anton Shunto( born 31 May 1988) is a Belarusian professional footballer.", "As of 2019, he plays for Molodechno.", "He is a younger brother of Denis Shunto, who is a founder and former president of Krumkachy Minsk."]], ["Tiberiu Olah", ["Tiberiu Olah or Tibor Ol\u00e1h( 2 January 1928 \u2013 2 October 2002) was a Romanian- Hungarian composer, teacher and musicologist."]], ["Bernard Chambaz", ["Bernard Chambaz( born 18 May 1949 in Boulogne- Billancourt) is a French writer, historian and poet, winner of several French literary prizes."]], ["Milo\u0161 Zli\u010di\u0107", ["Milo\u0161 Zli\u010di\u0107( born 29 December 1999) is a Serbian football forward.", "He is a younger brother of Lazar Zli\u010di\u0107."]], ["Dmitri Varfolomeyev (footballer, born 1978)", ["Dmitri Nikolayevich Varfolomeyev( born 15 March 1978 in Leningrad) is a former Russian football player.", "He is a younger brother of Sergei Varfolomeyev."]], ["Alan Chipp", ["Alan Chipp( born 9 January 1937) is a former Australian rules footballer who played for the Fitzroy Football Club in the Victorian Football League( VFL).", "He is a younger brother of politician Don Chipp."]], ["Markus Weissenberger", ["Markus Weissenberger( born March 8, 1975) is an Austrian former footballer who played as a midfielder.", "He is a younger brother of former Austria international player Thomas Weissenberger."]], ["Roman Smishko", ["Roman Smishko is a retired Ukrainian professional footballer who played as a goalkeeper.", "He is a younger brother of Ukrainian defender Bohdan Smishko."]], ["Vadim Vlasov", ["Vadim Nikolayevich Vlasov( born 19 December 1980) is a former Russian football player.", "He is a younger brother of Dmitri Vlasov."]]]
supporting_facts: [["Bernard Chambaz", 0], ["Tibor P\u00e9zsa", 0]]
evidences: [["Bernard Chambaz", "date of birth", "18 May 1949"], ["Tibor P\u00e9zsa", "date of birth", "15 November 1935"]]
answer: Bernard Chambaz