メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.342509004707 43.0858606644501, 141.342420252945 43.0862241919905, 141.342250342811 43.0869243017896, 141.341766158077 43.0868525885956, 141.341312030209 43.086792504445, 141.340725815997 43.0867099896006, 141.340898409054 43.0860243201025, 141.340989723848 43.0856567340058, 141.341077871965 43.0853020625249, 141.341532343233 43.0853706602559, 141.341979444394 43.0854381425786, 141.342593163623 43.0855156664523, 141.342509004707 43.0858606644501)) ^^http://www.opengis.net/ont/geosparql#wktLiteral