メタデータ名 C18207-19731101
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.0625000 34.8333333, 139.0687500 34.8333333, 139.0687500 34.8375000, 139.0625000 34.8375000, 139.0625000 34.8333333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral