メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.000397622265 36.6688240753539, 137.000428691478 36.669063285619, 137.000237922303 36.6696684206662, 137.000283684529 36.6705103089065, 137.000513879966 36.6725282815168, 136.999609198363 36.6725339929495, 136.998637220042 36.6725400916781, 136.998323040548 36.671831088596, 136.997409080547 36.6697686188673, 136.997056278557 36.6690074497168, 136.996566258877 36.6678161911257, 136.998145172874 36.667798163638, 137.000399893174 36.6677658198443, 137.000397622265 36.6688240753539)) ^^http://www.opengis.net/ont/geosparql#wktLiteral