メタデータ名 indicator-I8201021
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.3250000 38.0500000, 139.3312500 38.0500000, 139.3312500 38.0541667, 139.3250000 38.0541667, 139.3250000 38.0500000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral