メタデータ名 C2568
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.5875000 40.6041667, 140.5937500 40.6041667, 140.5937500 40.6083333, 140.5875000 40.6083333, 140.5875000 40.6041667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral