メタデータ名 G20473002921
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.0750000 31.6291667, 131.0812500 31.6291667, 131.0812500 31.6333333, 131.0750000 31.6333333, 131.0750000 31.6291667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral