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Relation: subclass

direct-childrendocumentationgraph
WaterArea99A body which is made up predominantly of water, e.g. rivers, lakes, oceans, etc.^
StreamWaterArea8A relatively narrow WaterArea where the water flows constantly and in the same direction, e.g. a ...^
    RiverMouth.RiverMouth is the subclass of WaterAreas that are the outfalls of a river or stream into anothe...^

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