メタデータ名 G20493265762
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.1875000 37.0750000, 138.1937500 37.0750000, 138.1937500 37.0791667, 138.1875000 37.0791667, 138.1875000 37.0750000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral