メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.323023839696 43.0566359512481, 141.322947500707 43.0569347234801, 141.322873726523 43.0572604525902, 141.322803489268 43.0575614544427, 141.322521076243 43.057520694714, 141.322388394181 43.0575042870571, 141.321451485622 43.0573755772976, 141.321530641114 43.0570096030631, 141.321546859867 43.0569346138073, 141.321580052227 43.0568138199979, 141.321596993899 43.0567521651447, 141.321696783328 43.0563236161022, 141.321761993784 43.0560571765301, 141.323121460022 43.0562488073523, 141.323071439929 43.0564176843198, 141.323023839696 43.0566359512481)) ^^http://www.opengis.net/ont/geosparql#wktLiteral