メタデータ名 G20644331231
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.6750000 35.6666667, 138.6812500 35.6666667, 138.6812500 35.6708334, 138.6750000 35.6708334, 138.6750000 35.6666667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral