メタデータ名 G20503465904
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.7000000 43.1750000, 141.7062500 43.1750000, 141.7062500 43.1791667, 141.7000000 43.1791667, 141.7000000 43.1750000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral