メタデータ名 G20574161881
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.9250000 43.3291667, 141.9312500 43.3291667, 141.9312500 43.3333333, 141.9250000 43.3333333, 141.9250000 43.3291667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral