メタデータ名 G20483014812
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.0750000 39.0500000, 141.0812500 39.0500000, 141.0812500 39.0541667, 141.0750000 39.0541667, 141.0750000 39.0500000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral