メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.322594064579 43.0747354510777, 141.321741458606 43.0751118939587, 141.321514465688 43.0752077378129, 141.320508481969 43.0756392643111, 141.319586302175 43.0760540239296, 141.319347733916 43.0756780723583, 141.319236697559 43.0755030334153, 141.319136876761 43.0753475680634, 141.321211076211 43.0744604164159, 141.321399754128 43.0743731930735, 141.322935322985 43.0737032541311, 141.323000742252 43.0736719963841, 141.323317053021 43.0740722734345, 141.323516263695 43.0743237681142, 141.322594064579 43.0747354510777)) ^^http://www.opengis.net/ont/geosparql#wktLiteral