メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.344117043078 43.0670137427115, 141.343955875355 43.0670017752709, 141.343691466711 43.0669785798757, 141.343136523106 43.0669475942602, 141.342809375498 43.0669442952994, 141.342794317771 43.0669441055781, 141.342196276081 43.0669605964871, 141.342300744477 43.0667521256393, 141.342434383468 43.0662309203939, 141.342581659902 43.0656564429776, 141.342694144547 43.0656716123694, 141.344363039991 43.0658965387244, 141.344117043078 43.0670137427115)) ^^http://www.opengis.net/ont/geosparql#wktLiteral