メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.776167988326 35.3575532206151, 136.775989015535 35.3585842422268, 136.775187537118 35.358611632343, 136.775132960274 35.3575630925374, 136.775083077688 35.3565218215375, 136.776352339373 35.356493483339, 136.776318650755 35.3566890749527, 136.776167988326 35.3575532206151)) ^^http://www.opengis.net/ont/geosparql#wktLiteral