メタデータ名 C18480-19700401
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.7562500 35.6833333, 139.7625000 35.6833333, 139.7625000 35.6875000, 139.7562500 35.6875000, 139.7562500 35.6833333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral