メタデータ名 G20473063221
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.6875000 42.8750000, 141.6937500 42.8750000, 141.6937500 42.8791667, 141.6875000 42.8791667, 141.6875000 42.8750000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral