メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.290308567143 43.0995275445602, 141.290303046895 43.0998811816534, 141.290293975694 43.1001118539557, 141.290290939913 43.1001895416034, 141.290280961469 43.1003676008776, 141.290280340148 43.1004074019334, 141.290278803315 43.1005058492169, 141.290269837944 43.1010801485545, 141.288882762212 43.0998546398827, 141.288476613292 43.099485590866, 141.288953011045 43.0991917488584, 141.289015170193 43.0991630138411, 141.290318066666 43.0991526319883, 141.290308567143 43.0995275445602)) ^^http://www.opengis.net/ont/geosparql#wktLiteral