メタデータ名 G20583906874
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.3875000 42.9375000, 141.3937500 42.9375000, 141.3937500 42.9416667, 141.3875000 42.9416667, 141.3875000 42.9375000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral