メタデータ名 indicator-H3803
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.0062500 31.7666667, 131.0125000 31.7666667, 131.0125000 31.7708334, 131.0062500 31.7708334, 131.0062500 31.7666667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral