メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.595200302698 42.9075664917035, 141.595936797434 42.9086549891116, 141.596557729464 42.9095717781493, 141.594982738242 42.9101583298231, 141.594370180444 42.9103743220132, 141.594116137604 42.9099870329312, 141.593891794568 42.9096596942553, 141.593669018135 42.9093290593899, 141.593453556916 42.909017103525, 141.593245593646 42.9087020250952, 141.593012384843 42.9083680234341, 141.592771840766 42.9080174509525, 141.592535901961 42.9076569884081, 141.592279012295 42.9072920442294, 141.594149552711 42.9066136141073, 141.594486431809 42.9064896529734, 141.595200302698 42.9075664917035)) ^^http://www.opengis.net/ont/geosparql#wktLiteral