メタデータ名 G20492816492
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.3125000 39.3083333, 141.3187500 39.3083333, 141.3187500 39.3125000, 141.3125000 39.3125000, 141.3125000 39.3083333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral