メタデータ名 G20493005471
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.2500000 41.0791667, 141.2562500 41.0791667, 141.2562500 41.0833333, 141.2500000 41.0833333, 141.2500000 41.0791667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral