メタデータ名 G20503017904
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.4750000 43.6458334, 142.4812500 43.6458334, 142.4812500 43.6500000, 142.4750000 43.6500000, 142.4750000 43.6458334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral