メタデータ名 G20503047474
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.5000000 43.2166667, 141.5062500 43.2166667, 141.5062500 43.2208334, 141.5000000 43.2208334, 141.5000000 43.2166667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral