メタデータ名 G20503023481
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.4312500 40.3375000, 141.4375000 40.3375000, 141.4375000 40.3416667, 141.4312500 40.3416667, 141.4312500 40.3375000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral