メタデータ名 G20493071594
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.6312500 42.9000000, 141.6375000 42.9000000, 141.6375000 42.9041667, 141.6312500 42.9041667, 141.6312500 42.9000000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral