メタデータ名 G20503003253
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.3812500 38.0500000, 139.3875000 38.0500000, 139.3875000 38.0541667, 139.3812500 38.0541667, 139.3812500 38.0500000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral