メタデータ名 C15306-19731101
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.0312500 39.8750000, 140.0375000 39.8750000, 140.0375000 39.8791667, 140.0312500 39.8791667, 140.0312500 39.8750000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral