メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.579321806222 43.3302210827395, 145.579888594864 43.330615232884, 145.580410948954 43.3309999864538, 145.57940157557 43.3317846903692, 145.579357347589 43.3318285220752, 145.578810051 43.3314104553997, 145.57826719495 43.3310241123611, 145.577714453922 43.3306189969836, 145.57822905154 43.3302210552996, 145.578769452653 43.32981596115, 145.579321806222 43.3302210827395)) ^^http://www.opengis.net/ont/geosparql#wktLiteral