メタデータ名 G20492907833
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.4500000 41.4166667, 141.4562500 41.4166667, 141.4562500 41.4208334, 141.4500000 41.4208334, 141.4500000 41.4166667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral