メタデータ名 C4628
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.3875000 31.6333333, 131.3937500 31.6333333, 131.3937500 31.6375000, 131.3875000 31.6375000, 131.3875000 31.6333333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral