Question: Alaska Wilderness Lake and Sembene!, are which genre of film?
Context: William Jerome Whalen III (July 18, 1940 – September 28, 2006) was the 10th director of the United States National Park Service.  He joined Park Service in 1965 as a Job Corps counselor and advanced to posts in National Capital Parks and Yosemite before becoming superintendent of Golden Gate National Recreation Area in 1972.  His experience in the burgeoning urban parks field contributed to his appointment as director in July 1977, yet the most significant event of his tenure was President Jimmy Carter's proclamation of much Alaska wilderness as national monuments in 1978, doubling the area under NPS jurisdiction.  Friction with park concessioners led to congressional calls for Whalen's removal in 1980, and Secretary of the Interior Cecil D. Andrus returned him to Golden Gate.  He left the NPS in 1983. The Eskimo potato is a type of edible plant that grows in the northern areas of Canada and Alaska.  It can be used in the state's famous Alaskan potato and egg breakfast tacos.  The plant's scientific name is variously attributed as either "Claytonia tuberosa" (Inuit: "oatkuk") or "Hedysarum alpinum" (Inuit: "mashu").  Both species have a range in the northern area of North America, have edible roots, and have been documented to have been used as a food source by Inuit peoples.  Due to its nutritional qualities, the eskimo potato is one of many edible foods listed in survival guides, such as the US Army's field manual "Survival", and is used in modern times to subsist in nature; for instance, Christopher McCandless used the plant as a food source while he survived in the Alaska wilderness.  However, while the tubers are edible, it is suspected that the ingestion of seeds from this plant caused McCandless' death. The Alaska Mountain Wilderness Classic (sometimes called the Alaska Wilderness Classic) is an adventure challenge that espouses purity of style and zero impact.  Started in 1982 as a 150 mi wilderness traverse, the Classic has crossed various mountain ranges throughout Alaska with some routes covering nearly 250 mi .  Traditionally, the same route has been used for three years in a row, with each year being a different month (June, July, or August). Lentiira is a medium-sized wilderness lake of Finland.  It belongs to Oulujoki main catchment area and it is situated in Kuhmo municipality in the Kainuu region.  The lake is quite narrow and deep with long bays.  It belongs to Lentiira–Iivantiira–Lentua kayaking route named The Tar Route. Mink Lake is the second-largest wilderness lake in the U.S. state of Oregon.  Mink Lake lies at about 5000 ft above sea level on a Cascade Range lava plateau in the Three Sisters Wilderness in eastern Lane County.  One of many lakes in the Mink Lake Basin, it covers 139 acre . Sembene!  is a 2015 documentary film focusing on the life of Senegalese filmmaker Ousmane Sembène, who is considered to be the father of African cinema.  It is co-directed by Samba Gadjigo and Jason Silverman.  The film's world premiere took place at the Sundance Film Festival in January 2015.  It also played at the Cannes Film Festival and the Venice Film Festival. Nungesser Lake is a lake in northwestern Ontario, Canada.  It is a wilderness lake in Kenora District, about 30 kilometres northeast of the town of Red Lake. Alaska Wilderness Lake is a 1971 American documentary film produced by Alan Landsburg.  It was nominated for an Academy Award for Best Documentary Feature. The Wilderness Center (TWC) is a 501(c)3 nonprofit nature center that operates its headquarters in Wilmot, Ohio, located in southwest Stark County, Ohio.  It includes an interpretive building, astronomy education building, an observation tower, pier and picnic shelters.  TWC's 10 miles of trails go through forest, prairie and along streams and creeks and past ponds and Wilderness Lake.  TWC also maintains hiking trails on its Zoar Woods satellite property in northeast Tuscarawas County, Ohio.  TWC owns or holds conservation easements on other tracts of land throughout a six-county area.  TWC preserves these lands in forested or agricultural condition. The Alaska Wilderness League (AWL) is a nonprofit organization that works to protect Alaska’s most significant wild lands from oil and gas drilling and from other industrial threats.  Founded in 1993, AWL has its main office in Washington, DC, with additional offices in Anchorage and Juneau, Alaska.
Answer: documentary