メタデータ名 G20513413371
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.6625000 42.6541667, 141.6687500 42.6541667, 141.6687500 42.6583333, 141.6625000 42.6583333, 141.6625000 42.6541667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral