メタデータ名 G20493161931
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.4937500 43.4583333, 142.5000000 43.4583333, 142.5000000 43.4625000, 142.4937500 43.4625000, 142.4937500 43.4583333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral