メタデータ名 G20503003974
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.3937500 43.7791667, 141.4000000 43.7791667, 141.4000000 43.7833333, 141.3937500 43.7833333, 141.3937500 43.7791667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral