メタデータ名 G20503131181
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.6875000 35.1583333, 138.6937500 35.1583333, 138.6937500 35.1625000, 138.6875000 35.1625000, 138.6875000 35.1583333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral