メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.383793617988 43.0368195470045, 141.384206654951 43.037194648923, 141.383717418991 43.0374999810668, 141.383262233171 43.0377698408565, 141.382965596328 43.03795326748, 141.382179310151 43.0372173506319, 141.382480615899 43.0370495749725, 141.382941044791 43.0367817276461, 141.383434121069 43.0364895095996, 141.383793617988 43.0368195470045)) ^^http://www.opengis.net/ont/geosparql#wktLiteral