メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.3904239326 43.0638471051129, 141.390708686968 43.0639451035043, 141.391309679491 43.0641672139868, 141.390977666408 43.0649262524247, 141.390895609888 43.0651082129145, 141.390687790088 43.0655728678511, 141.389199895976 43.0651187493613, 141.388067363708 43.0647632181208, 141.388337260751 43.0642847580957, 141.388933690206 43.0633101872899, 141.389295651778 43.0634357054774, 141.389735217959 43.0635881805661, 141.3904239326 43.0638471051129)) ^^http://www.opengis.net/ont/geosparql#wktLiteral