メタデータ名 indicator-L6403
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.5875000 39.2000000, 141.5937500 39.2000000, 141.5937500 39.2041667, 141.5875000 39.2041667, 141.5875000 39.2000000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral