メタデータ名 G20493275173
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.4750000 38.7791667, 141.4812500 38.7791667, 141.4812500 38.7833333, 141.4750000 38.7833333, 141.4750000 38.7791667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral