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Relation: subclass

direct-childrendocumentationgraph
City596A LandArea of relatively small size, inhabited by a community of people, and having some sort of ...^
    PortCity6A City near a WaterArea.^
        RiverPort.RiverPort is the subclass of PortCity whose instances are port cities Adjacent to a navigable...^
        SeaPort.SeaPort is the subclass of PortCity whose instances are port cities on or closely linked to a &...^
        ContainerPort.^
        DeepDraftPort.^

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