メタデータ名 ieClassification-5
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.9437500 42.5625000, 141.9500000 42.5625000, 141.9500000 42.5666667, 141.9437500 42.5666667, 141.9437500 42.5625000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral