メタデータ名 C12106-19920401
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.0812500 42.8000000, 143.0875000 42.8000000, 143.0875000 42.8041667, 143.0812500 42.8041667, 143.0812500 42.8000000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral