Question: Cancer and The White Diamond, are of which genre?
Context: The White Diamond is a 2004 documentary film by Werner Herzog.  It illustrates the history of aviation and depicts the struggles and triumphs of Graham Dorrington, an aeronautical engineer, who has designed and built a teardrop-shaped airship which he plans to fly over the forest canopies of Guyana.  It features music composed by Ernst Reijseger, which was re-used in Herzog's 2005 film "The Wild Blue Yonder". The Jacob Diamond, previously known as the Imperial or Great White Diamond, is a large diamond, ranked fifth in the world in size.  It is believed to be the Victoria Diamond, previously owned by the Nizam of Hyderabad and currently owned by the Government of India. Ocean Monarch was an emigration barque which in 1848 caught fire at sea and sank with the loss of 178 lives.  The barque was owned by the White Diamond Line and was registered in Boston, the port where she was built.  The "Ocean Monarch" was launched from the East Boston shipyard of Donald McKay in July 1847. The Star of South Africa, also known as the "Dudley Diamond", is a 47.69 carat white diamond found by a Griqua shepherd boy in 1869 on the banks of the Orange River.  The original stone, before cutting, weighed 83.5 carat .  The finding of this large diamond spurred the rush by many prospectors to this new diamond field, known as New Rush but later to be known as Kimberley. The Benton MacKaye Trail or BMT is a footpath nearly 300 mi in length in the Appalachian Mountains in the southeastern United States and is blazed by a white diamond, 5" across by 7" tall.  The hiking trail was created and is maintained by the Benton MacKaye Trail Association, and it is named for Benton MacKaye, the Massachusetts forester and regional planner who first had the idea for the Appalachian Trail in 1921. The Amarillo Starlight is the largest diamond found by a park visitor in the Crater of Diamonds State Park in Arkansas since 1972, when it was established as a state park.  The Amarillo Starlight was found by W. W. Johnson of Amarillo, Texas in 1975 while he was vacationing at the park with his family.  When unearthed, it was a 16.37 carat white diamond, but it has since been cut into a 7.54 carat marquise shape.  Its value has been estimated between $150,000 and $175,000. Cork City Women's Football Club (Irish: "Cumann Peile Chathair Chorcaí na mBan" ) is an Irish women's association football team, based in Cork.  The club play in a green strip with a red and white diamond on the shirt and white hoops on the socks.  The club crest is the same as the Cork City FC emblem, which is itself a variant of the Cork coat of arms.  The club was founded in 2011 as Cork Women's F.C., to take its place as one of seven teams in Ireland's inaugural Women's National League.  In 2014 they affiliated with FORAS, the supporters' trust who own Cork City FC, and relaunched as Cork City Women's FC.  The club play their games at Bishopstown Stadium. Cancer: The Emperor of All Maladies is a 2015 American documentary film directed by Barak Goodman and produced by Ken Burns.  The film, in three-episodes of two hours each, is based on the Pulitzer Prize winning 2010 book, "", by Siddhartha Mukherjee, and describes the history of cancer, and cancer treatments, particularly in the United States. Graham Dorrington (born in Chalfont St. Giles), is an English aeronautical engineer.  He received his PhD from the University of Cambridge in 1989 and was formerly a lecturer at Queen Mary, University of London, though he is now teaching at RMIT University in Melbourne, Australia.  He was the subject of the film "The White Diamond" (2004) directed by Werner Herzog. The flag of Arkansas, also known as the Arkansas flag, consists of a red field charged with a large blue-bordered white lozenge (or diamond).  Twenty-nine five-pointed stars appear on the flag: twenty-five small white stars within the blue border, and four larger blue stars in the white diamond.  The inscription "ARKANSAS" appears in blue within the white lozenge, with one star above and three stars below.  The star above and the two outer stars below point upwards; the inner star below points downwards.  The flag was designed by Willie Hocker of Jefferson County, a member of the Pine Bluff Chapter, Daughters of the American Revolution.
Answer: documentary