メタデータ名 C2138
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.1625000 35.0875000, 137.1687500 35.0875000, 137.1687500 35.0916667, 137.1625000 35.0916667, 137.1625000 35.0875000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral