メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.974256520547 43.5386366153332, 144.973577289669 43.5381844205799, 144.974410244216 43.5375052127856, 144.974473461283 43.5374537433025, 144.975028659211 43.5378263024985, 144.975152976363 43.5379080006522, 144.975085427218 43.5379576746983, 144.975039565864 43.5379953003691, 144.975152921599 43.5380739891511, 144.97506134242 43.5381395306486, 144.974952310636 43.5380666800419, 144.974256520547 43.5386366153332)) ^^http://www.opengis.net/ont/geosparql#wktLiteral