メタデータ名 G20544004621
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.0562500 39.0958334, 141.0625000 39.0958334, 141.0625000 39.1000000, 141.0562500 39.1000000, 141.0562500 39.0958334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral