メタデータ名 G20503270323
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.4750000 43.0750000, 141.4812500 43.0750000, 141.4812500 43.0791667, 141.4750000 43.0791667, 141.4750000 43.0750000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral