メタデータ名 G20503170312
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.1312500 39.6416667, 141.1375000 39.6416667, 141.1375000 39.6458334, 141.1312500 39.6458334, 141.1312500 39.6416667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral