question: When did Eduardo Frei Ruiz-Tagle's father die?
context: [["Bill Smith (footballer, born 1897)", ["William Thomas Smith( born 9 April 1897, date of death unknown) was an English professional footballer."]], ["Eduardo Frei Montalva", ["Eduardo Nicanor Frei Montalva", "(January 16, 1911 \u2013 January 22, 1982) was a Chilean political leader.", "In his long political career, he was Minister of Public Works, president of his Christian Democratic Party, senator, President of the Senate, and the 28th president of Chile from 1964 to 1970.", "His eldest son, Eduardo Frei Ruiz-Tagle, also became president of Chile (1994\u20132000).", "Frei's Christian Democratic Party supported the Armed Forces intervention to remove his successor Salvador Allende from office in 1973, after the Chamber of Deputies, on August 22, 1973, accused Allende of violating the Constitution and called for his overthrow.", "He was later a vocal opponent of the Augusto Pinochet regime.", "On January 22, 1982, Frei was assassinated in Santiago, Chile."]], ["Fred Bradley (rower)", ["Frederick Bradley( 1908- date of death unknown) was an English rower."]], ["Harry Wainwright (footballer)", ["Harry Wainwright( born 1899; date of death unknown) was an English footballer."]], ["Etan Boritzer", ["Etan Boritzer( born 1950) is an American writer of children \u2019s literature who is best known for his book\" What is God?\" first published in 1989.", "His best selling\" What is?\" illustrated children's book series on character education and difficult subjects for children is a popular teaching guide for parents, teachers and child- life professionals.", "Boritzer gained national critical acclaim after\" What is God?\" was published in 1989 although the book has caused controversy from religious fundamentalists for its universalist views.", "The other current books in the\" What is?\" series include", "What is Love?,", "What is Death?,", "What is Beautiful?,", "What is Funny?,", "What is Right?,", "What is Peace?,", "What is Money?,", "What is Dreaming?,", "What is a Friend?,", "What is True?,", "What is a Family?,", "What is a Feeling?\"", "The series is now also translated into 15 languages.", "Boritzer was first published in 1963 at the age of 13 when he wrote an essay in his English class at Wade Junior High School in the Bronx, New York on the assassination of John F. Kennedy.", "His essay was included in a special anthology by New York City public school children compiled and published by the New York City Department of Education.", "Boritzer now lives in Venice, California and maintains his publishing office there also.", "He has helped numerous other authors to get published through\" How to Get Your Book Published!\" programs.", "Boritzer is also a yoga teacher who teaches regular classes locally and guest- teaches nationally.", "He is also recognized nationally as an erudite speaker on\" The Teachings of the Buddha.\""]], ["Eduardo Frei Ruiz-Tagle", ["Eduardo Alfredo Juan Bernardo Frei Ruiz-Tagle (born June 24, 1942) is a Chilean politician and civil engineer who was President of Chile from 1994 to 2000.", "He was also a Senator, fulfilling the role of President of the Senate from 2006 to 2008.", "He attempted a comeback as the candidate of the ruling Concertaci\u00f3n coalition for the 2009 presidential election, but was narrowly defeated.", "His father was Eduardo Frei Montalva, who was President of Chile from 1964 to 1970."]], ["Theodred II (Bishop of Elmham)", ["Theodred II was a medieval Bishop of Elmham.", "The date of Theodred's consecration unknown, but the date of his death was sometime between 995 and 997."]], ["Harry Johnson (wrestler)", ["Harry Johnson( 1903- date of death unknown) was an English wrestler."]], ["Albert Thompson (footballer, born 1912)", ["Albert Thompson( born 1912, date of death unknown) was a Welsh footballer."]], ["Thomas Scott (diver)", ["Thomas Scott( 1907- date of death unknown) was an English diver."]]]
supporting_facts: [["Eduardo Frei Ruiz-Tagle", 3], ["Eduardo Frei Montalva", 1]]
evidences: [["Eduardo Alfredo Juan Bernardo Frei Ruiz-Tagle", "father", "Eduardo Frei Montalva"], ["Eduardo Frei Montalva", "date of death", "January 22, 1982"]]
answer: January 22, 1982