#Great_Slave_Lake  a lake in the Northwest Territories in northwestern Canada; drained by the Mackenzie River
  supertype:  #lake  a body of (usually fresh) water surrounded by land
  part of:  #Northwest_Territories  a territory in northwestern Canada
     part of:  #Canada  a nation in northern North America; the French were the first Europeans to settle in mainland Canada; "the border between the United States and Canada is the longest unguarded border in the world"
        part of:  #North_America  a continent (the third largest) in the western hemisphere connected to South America by the Isthmus of Panama
           part of:  #northern_hemisphere  the hemisphere north of the equator
           part of:  #western_hemisphere__westernhemisphere__occident__New_World  the hemisphere that includes North and South America
           part of:  #the_Americas__America  North and South America

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