メタデータ名 C12408-19910401
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.1437500 41.3708334, 141.1500000 41.3708334, 141.1500000 41.3750000, 141.1437500 41.3750000, 141.1437500 41.3708334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral