メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.374456539323 43.0917972647206, 141.37435794423 43.0922774151736, 141.37430184246 43.0924966208132, 141.374239725999 43.0927740828163, 141.373801509456 43.0927100396701, 141.373379155069 43.092650828694, 141.372787669633 43.0925678155823, 141.372074973075 43.0924653751894, 141.372081403826 43.0924384886281, 141.372164274792 43.0920995089928, 141.372294541986 43.091566645119, 141.372349141801 43.0913388478789, 141.372427216681 43.0910128420138, 141.37312859274 43.0911004257352, 141.374581673317 43.0912998756263, 141.374456539323 43.0917972647206)) ^^http://www.opengis.net/ont/geosparql#wktLiteral