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  Africa

Sigma KEE - Africa

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Africa
Relationships      
InstancesContinentAs defined in the CIA World Fact Book, Continent covers seven land masses: Africa, NorthAmerica, SouthAmerica, Antarctica, Europe, Asia, and Oceania. Note that Australia, counted as a continent in some other systems, is included in Oceania in the Fact Book. As a consequence, there is no Nation which is also a Continent.
 EntityThe universal class of individuals. This is the root node of the ontology.
 GeographicAreaA geographic location, generally having definite boundaries. Note that this differs from its immediate superclass Region in that a GeographicArea is a three-dimensional Region of the earth. Accordingly, all astronomical objects other than earth and all one-dimensional and two-dimensional Regions are not classed under GeographicArea.
 LandAreaAn area which is predominantly solid ground, e.g. a Nation, a mountain, a desert, etc. Note that a LandArea may contain some relatively small WaterAreas. For example, Australia is a LandArea even though it contains various rivers and lakes.
 ObjectCorresponds roughly to the class of ordinary objects. Examples include normal physical objects, geographical regions, and locations of Processes, the complement of Objects in the Physical class. In a 4D ontology, an Object is something whose spatiotemporal extent is thought of as dividing into spatial parts roughly parallel to the time-axis.
 PhysicalAn entity that has a location in space-time. Note that locations are themselves understood to have a location in space-time.
 RegionA topographic location. Regions encompass surfaces of Objects, imaginary places, and GeographicAreas. Note that a Region is the only kind of Object which can be located at itself. Note too that Region is not a subclass of SelfConnectedObject, because some Regions, e.g. archipelagos, have parts which are not connected with one another.
Belongs to Class Entity


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