メタデータ名 C12403-19870801
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.0687500 40.3791667, 141.0750000 40.3791667, 141.0750000 40.3833333, 141.0687500 40.3833333, 141.0687500 40.3791667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral