メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.372068653241 43.1089943773901, 141.372595744598 43.109067476535, 141.373149247655 43.1091463313107, 141.372822630778 43.11035166954, 141.372284322581 43.1102701164954, 141.37177619201 43.1101861206699, 141.371197774353 43.110103763303, 141.371485230614 43.108906990194, 141.372068653241 43.1089943773901)) ^^http://www.opengis.net/ont/geosparql#wktLiteral