メタデータ名 obsType-concealing
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.0312500 34.0750000, 132.0375000 34.0750000, 132.0375000 34.0791667, 132.0312500 34.0791667, 132.0312500 34.0750000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral