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Relation: subclass

direct-childrendocumentationgraph
Hill2A Hill is a raised part of the earth's surface with sloping sides - an old mountain which because...^
Volcano2A Volcano in the broadest sense, i.e., a region containing a vent through which magmous and/or py...^
    VolcanicCone.A VolcanicCone is a hill of lava or pyroclastics surrounding a volcanic vent. Not as high as a ...^

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