メタデータ名 C18425-20050201
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.9937500 37.2250000, 139.0000000 37.2250000, 139.0000000 37.2291667, 138.9937500 37.2291667, 138.9937500 37.2250000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral