メタデータ名 G20473173452
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.5375000 42.8625000, 141.5437500 42.8625000, 141.5437500 42.8666667, 141.5375000 42.8666667, 141.5375000 42.8625000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral