メタデータ名 G20503122594
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.1250000 39.1791667, 141.1312500 39.1791667, 141.1312500 39.1833333, 141.1250000 39.1833333, 141.1250000 39.1791667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral