メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.385338565997 43.0957686492599, 141.386037060135 43.0957321526563, 141.386044255717 43.096345944412, 141.38604595174 43.0964299265488, 141.386042083056 43.0965002938062, 141.386031940854 43.0965457886301, 141.38599197742 43.0966850141215, 141.385917419313 43.0969705386769, 141.385315041117 43.097063740272, 141.384292099068 43.0972057287229, 141.384139771806 43.0967923241518, 141.383800893991 43.0958273437946, 141.38451951237 43.0958066916115, 141.385338565997 43.0957686492599)) ^^http://www.opengis.net/ont/geosparql#wktLiteral