メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.002079638938 34.9038302184462, 137.001446321354 34.9042847472625, 137.000122108215 34.902869670554, 137.000067453838 34.9028100838795, 137.000617259505 34.9024077758777, 137.000839206846 34.9022255291219, 137.001005087739 34.9020791233122, 137.00106995044 34.902015686245, 137.001389925073 34.9026108837956, 137.00154870073 34.9028901349797, 137.002079638938 34.9038302184462)) ^^http://www.opengis.net/ont/geosparql#wktLiteral