メタデータ名 G20503131334
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.0812500 31.4875000, 131.0875000 31.4875000, 131.0875000 31.4916667, 131.0812500 31.4916667, 131.0812500 31.4875000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral