Question: What is the cause of death of Sophie Gurney's father?

Knowledge 1: Sophie Gurney
Sophie Jane Gurney (née Raverat, first married name Pryor; 20 December 1919 – 10 June 2011) was an English artist, linked to many of the leading intellectual and cultural figures of the early 20th century.Gurney was born in 1919, the younger daughter of the French painter Jacques Raverat and his English wife Gwen (née Darwin).Through her mother she was a great-granddaughter of the naturalist Charles Darwin.Her father died in 1925 when she was only five years old, and she and her elder sister Elisabeth were temporarily taken into the care of her first cousin once removed Nora Barlow and her husband Alan.Sophie married the entomologist Mark Pryor in 1940; they had four children.Emily (1942–2008), William (born 1945), Lucy (born 1948) and Nelly (born 1952), who married the film director/farmer Philip Trevelyan.Mark and Sophie Pryor were involved in a road traffic accident in 1967, in which she was relatively unharmed but which left him with brain damage in a persistent vegetative state for almost three years until his death in 1970, aged 51.She also had to deal with her son William's heroin addiction.She subsequently remarried Henry Charles Horton Gurney OBE (1913–1997, known as Charles), professor of mechanical engineering at the University of Hong Kong (1966-1973), who had been Mark's boss at RAE Farnborough.On his retirement, they moved to Totnes, Devon, where Sophie became a member of the 21 Group of artists. [SEP] Knowledge 2: Jacques Raverat
Jacques Pierre Paul Raverat (pronounced Rav-er-ah)(March 20, 1885– March 6, 1925) was a French painter; Raverat was the son of Georges Pierre Raverat and Helena Lorena Raverat, née Caron; he was born in Paris, France in 1885.He married the English painter and wood engraver Gwen Darwin, in 1911, the daughter of George Darwin and Lady Maud Darwin, née Maud du Puy; she was a granddaughter of Charles Darwin.They had two daughters, Elisabeth (1916–2014), who married the Norwegian politician Edvard Hambro, and Sophie Jane (1919-2011) who married the Cambridge scholar M. G. M. Pryor and later Charles Gurney.Raverat suffered from a form of multiple sclerosis and died on March 6 1925 following complications of it.His funeral took place in Christ Church in Cannes, France where he may be buried.Before moving, in 1920, to Vence in France the couple were active members of an intellectual circle known as the "Neo-Pagans" and centred round Rupert Brooke.They also moved on the fringes of the Bloomsbury Group, whose members included Virginia Woolf, John Maynard Keynes, Vanessa Bell and Lytton Strachey.In 2004, his grandson, William Pryor edited the complete correspondence between Raverat, his wife and Virginia Woolf which was published as "Virginia Woolf and the Raverats".
Knowledge 1: Sophie Gurney
Sophie Jane Gurney (née Raverat, first married name Pryor; 20 December 1919 – 10 June 2011) was an English artist, linked to many of the leading intellectual and cultural figures of the early 20th century.Gurney was born in 1919, the younger daughter of the French painter Jacques Raverat and his English wife Gwen (née Darwin).Through her mother she was a great-granddaughter of the naturalist Charles Darwin.Her father died in 1925 when she was only five years old, and she and her elder sister Elisabeth were temporarily taken into the care of her first cousin once removed Nora Barlow and her husband Alan.Sophie married the entomologist Mark Pryor in 1940; they had four children.Emily (1942–2008), William (born 1945), Lucy (born 1948) and Nelly (born 1952), who married the film director/farmer Philip Trevelyan.Mark and Sophie Pryor were involved in a road traffic accident in 1967, in which she was relatively unharmed but which left him with brain damage in a persistent vegetative state for almost three years until his death in 1970, aged 51.She also had to deal with her son William's heroin addiction.She subsequently remarried Henry Charles Horton Gurney OBE (1913–1997, known as Charles), professor of mechanical engineering at the University of Hong Kong (1966-1973), who had been Mark's boss at RAE Farnborough.On his retirement, they moved to Totnes, Devon, where Sophie became a member of the 21 Group of artists. [SEP] Knowledge 2: 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.
Knowledge 1: Sophie Gurney
Sophie Jane Gurney (née Raverat, first married name Pryor; 20 December 1919 – 10 June 2011) was an English artist, linked to many of the leading intellectual and cultural figures of the early 20th century.Gurney was born in 1919, the younger daughter of the French painter Jacques Raverat and his English wife Gwen (née Darwin).Through her mother she was a great-granddaughter of the naturalist Charles Darwin.Her father died in 1925 when she was only five years old, and she and her elder sister Elisabeth were temporarily taken into the care of her first cousin once removed Nora Barlow and her husband Alan.Sophie married the entomologist Mark Pryor in 1940; they had four children.Emily (1942–2008), William (born 1945), Lucy (born 1948) and Nelly (born 1952), who married the film director/farmer Philip Trevelyan.Mark and Sophie Pryor were involved in a road traffic accident in 1967, in which she was relatively unharmed but which left him with brain damage in a persistent vegetative state for almost three years until his death in 1970, aged 51.She also had to deal with her son William's heroin addiction.She subsequently remarried Henry Charles Horton Gurney OBE (1913–1997, known as Charles), professor of mechanical engineering at the University of Hong Kong (1966-1973), who had been Mark's boss at RAE Farnborough.On his retirement, they moved to Totnes, Devon, where Sophie became a member of the 21 Group of artists. [SEP] Knowledge 2: 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 – 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"( 2011–2017).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.

Answer: multiple sclerosis