メタデータ名 C15220-19870603
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.6937500 39.1375000, 141.7000000 39.1375000, 141.7000000 39.1416667, 141.6937500 39.1416667, 141.6937500 39.1375000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral