question: When did Thure Von Uexküll's father die?
context: [["Harry Wainwright (footballer)", ["Harry Wainwright( born 1899; date of death unknown) was an English footballer."]], ["Bill Smith (footballer, born 1897)", ["William Thomas Smith( born 9 April 1897, date of death unknown) was an English professional footballer."]], ["Alexander Rudolf Karl von Uexk\u00fcll", ["Alexander Rudolf Karl Freiherr von Uexk\u00fcll  was a Baltic German politician who was the mayor of Reval (now) from April 1878 to June 1883.", "He was a member of the noble von Uexk\u00fcll family, which had origins in Bremen.", "Von Uexk\u00fcll studied in the University of Dorpat.", "He owned Heimar manor (now).", "His son was biologist and pioneer of biosemiotics Jakob von Uexk\u00fcll.", "He was succeeded by Wilhelm Greiffenhagen."]], ["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."]], ["Giorgio Prodi", ["Giorgio Prodi( August 12, 1928, Scandiano, Italy \u2013 December 4, 1987) was an Italian medical scientist, oncologist and semiotician.", "He studied medicine and chemistry in the University of Bologna.", "From 1958, he taught general pathology and experimental oncology.", "From 1973, he was the Director of the Institute of Cancerology.", "He has published a series of books on philosophy of medicine and biology.", "Together with Thomas Sebeok and Thure von Uexk\u00fcll, he has developed a semiotic approach in biology( biosemiotics) in his works of the 1970s and 1980s.", "For his honour, there exists\" Giorgio Prodi\" Centre of Cancer Research in the University of Bologna."]], ["Jakob Johann von Uexk\u00fcll", ["Jakob Johann Freiherr von Uexk\u00fcll (\u2013 25 July 1944) was a Baltic German biologist who worked in the fields of muscular physiology, animal behaviour studies, and the cybernetics of life.", "However, his most notable contribution is the notion of \"Umwelt\", used by semiotician Thomas Sebeok and philosopher Martin Heidegger.", "His works established biosemiotics as a field of research."]], ["Thure von Uexk\u00fcll", ["Karl Kuno Thure Freiherr von Uexk\u00fcll (March 15, 1908, Heidelberg \u2013 September 29, 2004, Freiburg) was a German scholar of psychosomatic medicine and biosemiotics.", "He developed the approach of his father, Jakob von Uexk\u00fcll, in the study of living systems and applied it in medicine.", "His mother was Gudrun Baroness von Uexk\u00fcll (Gr\u00e4fin von Schwerin)."]], ["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.\""]], ["Thomas Scott (diver)", ["Thomas Scott( 1907- date of death unknown) was an English diver."]], ["Albert Thompson (footballer, born 1912)", ["Albert Thompson( born 1912, date of death unknown) was a Welsh footballer."]]]
supporting_facts: [["Thure von Uexk\u00fcll", 1], ["Jakob Johann von Uexk\u00fcll", 0]]
evidences: [["Karl Kuno Thure Freiherr von Uexk\u00fcll", "father", "Jakob von Uexk\u00fcll"], ["Jakob Johann Freiherr von Uexk\u00fcll", "date of death", "25 July 1944"]]
answer: 25 July 1944