メタデータ名 G20493012491
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.2187500 39.3791667, 141.2250000 39.3791667, 141.2250000 39.3833333, 141.2187500 39.3833333, 141.2187500 39.3791667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral