メタデータ名 C15504-19950301
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.7375000 43.0791667, 141.7437500 43.0791667, 141.7437500 43.0833333, 141.7375000 43.0833333, 141.7375000 43.0791667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral