メタデータ名 C21404-19810301
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.7375000 35.2083333, 138.7437500 35.2083333, 138.7437500 35.2125000, 138.7375000 35.2125000, 138.7375000 35.2083333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral