メタデータ名 G20492957541
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.8000000 45.4000000, 141.8062500 45.4000000, 141.8062500 45.4041667, 141.8000000 45.4041667, 141.8000000 45.4000000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral