メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.466858821484 43.0402077559847, 144.466812267355 43.0402674515065, 144.466592301539 43.0405487345895, 144.466442350825 43.0407562932123, 144.465741340522 43.0408052537919, 144.465153048112 43.0408533640377, 144.465132701358 43.04026702018, 144.465125680833 43.0400188310731, 144.465679523092 43.0399940344785, 144.467023368326 43.0399743854059, 144.466858821484 43.0402077559847)) ^^http://www.opengis.net/ont/geosparql#wktLiteral