メタデータ名 C18366-19700401
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.6687500 41.8833333, 140.6750000 41.8833333, 140.6750000 41.8875000, 140.6687500 41.8875000, 140.6687500 41.8833333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral