question: What is the cause of death of Alex Matthiessen's father?
context: [["Charibert I", ["Charibert I( c. 517 \u2013 December 567) was the Merovingian King of Paris, the second- eldest son of Chlothar I and his first wife Ingund.", "His elder brother Gunthar died sometime before their father's death.", "He shared in the partition of the Frankish kingdom that followed his father \u2019s death in 561, receiving the old kingdom of Childebert I, with its capital at Paris."]], ["Michael Jai White", ["Michael Richard Jai White( born November 10, 1967) is an American actor, director, and martial artist.", "He is the first African American to portray a major comic book superhero in a major motion picture, having starred as Al Simmons, the protagonist in the 1997 film\" Spawn\".", "White appeared as Marcus Williams in the Tyler Perry films\" Why Did I Get Married?\" and\" Why Did I Get Married Too?\", and starred as the character on the TBS/ OWN comedy- drama television series\" Tyler Perry's For Better or Worse\".", "White portrayed Jax Briggs in and the Cyborg Seth in, the return.", "He portrayed boxer Mike Tyson in the 1995 HBO television movie\" Tyson\".", "He also played the title role in the blaxploitation parody film\" Black Dynamite\", as well as the animated series of the same name."]], ["Richard T. Jones", ["Richard Timothy Jones( born January 16, 1972) is an American actor.", "Jones is best known for his portrayals of Laveinio in the dramatic film\" The Wood\"( 1999) and Mike of the dramatic films\" Why Did I Get Married?\"( 2007) and\" Why Did I Get Married Too?\"( 2010).", "He is also well known for his role as Bruce Van Exel, court services officer on the CBS television series\" Judging Amy\" that aired from 1999 to 2005."]], ["Tasha Smith", ["Tasha Smith( born February 28, 1971) is an American actress, director and producer.", "She began her career in a starring role on the NBC comedy series\" Boston Common\"( 1996 \u2013 97), and she later appeared in numerous movies and television series.", "Smith has appeared in films include\" The Whole Ten Yards\"( 2004),\" Daddy's Little Girls\"( 2007),\" The Longshots\"( 2008),\" Couples Retreat\"( 2009), and\" Jumping the Broom\"( 2011).", "She starred as Angela Williams in the Tyler Perry films\" Why Did I Get Married?\"( 2007), its sequel\" Why Did I Get Married Too?\"( 2010), and on the television series based on the movies,\" For Better or Worse\"( 2011\u20132017).", "In 2015, she began a recurring role as Carol Holloway on the Fox musical drama series\" Empire\".", "Later in the same year, Smith made her directorial debut."]], ["Ilir Hoxha", ["Ilir Hoxha( born March 31, 1949 in Tirana, Albania) is one of the sons of former Albanian leader Enver Hoxha.", "Ilir was imprisoned a few years after his father's death, but was released in 1996.", "Ilir has been called in to testify several times in an attempt to disclose secrets from the previous communist era.", "Ilir wrote a memoir in 1995 called\" My Father, Enver Hoxha\".", "The article recounts Ilir's memories of his father's death, the impact it had on the family, his mother's struggles, and also the investigation and prosecution that was conducted on him after his father's death.", "During the 2005 election campaign in Albania, Ilir campaigned for candidates of the Party of Labour of Albania( 2002).", "Ilir still resides in Albania."]], ["Sharon Leal", ["Sharon Ann Leal( born October 17, 1972) is an American actress and singer.", "She is known for her roles in movies such as\" Dreamgirls This Christmas Why Did I Get Married?", "Why Did I Get Married Too?\" and her roles on the television shows\" LegacyGuiding Light\", and\" Boston Public\"."]], ["Denise Boutte", ["Denise Boutte is an American actress and model, who has appeared in the films\" Why Did I Get Married?\" as Trina,, as Mandy,\" Sister's Keeper\" and\" Noah's Arc\".", "She starred in the sitcom\" Meet the Browns\" as Sasha Brown."]], ["Alex Matthiessen", ["Alex Matthiessen (born July 3, 1964) is an environmentalist and lives in New York City.", "He is the son of author and naturalist Peter Matthiessen."]], ["Peter Matthiessen", ["Peter Matthiessen (May 22, 1927 \u2013 April 5, 2014) was an American novelist, naturalist, wilderness writer, zen teacher and CIA officer.", "A co-founder of the literary magazine \"The Paris Review\", he was the only writer to have won the National Book Award in both fiction and nonfiction.", "He was also a prominent environmental activist.", "Matthiessen's nonfiction featured nature and travel, notably \"The Snow Leopard\" (1978) and American Indian issues and history, such as a detailed and controversial study of the Leonard Peltier case, \"", "In the Spirit of Crazy Horse\" (1983).", "His fiction was adapted for film: the early story \"Travelin' Man\" was made into \"The Young One\" (1960) by Luis Bu\u00f1uel and the novel \"At Play in the Fields of the Lord\" (1965) into the 1991 film of the same name.", "In 2008, at age 81, Matthiessen received the National Book Award for Fiction for \"Shadow Country\", a one-volume, 890-page revision of his three novels set in frontier Florida that had been published in the 1990s.", "According to critic Michael Dirda, \"No one writes more lyrically [than Matthiessen] about animals or describes more movingly the spiritual experience of mountaintops, savannas, and the sea.\"", "Matthiessen was treated for acute leukemia for more than a year.", "He died on April 5, 2014, three days before publication of his final book, the novel \"In Paradise\" on April 8."]], ["Lamman Rucker", ["Lamman Rucker( born October 6, 1971) is an American actor.", "Rucker began his career on the daytime soap operas\" As the World Turns\" and\" All My Children\", before roles in Tyler Perry's films", "\" Why Did I Get Married?", "Why Did I Get Married Too?\", and\" Meet the Browns\", and its television adaptation.", "In 2016, he began starring as Jacob Greenleaf in the Oprah Winfrey Network drama series,\" Greenleaf\"."]]]
supporting_facts: [["Alex Matthiessen", 1], ["Peter Matthiessen", 8]]
evidences: [["Alex Matthiessen", "father", "Peter Matthiessen"], ["Peter Matthiessen", "cause of death", "leukemia"]]
answer: leukemia