メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.0875000 33.9666667, 132.0937500 33.9666667, 132.0937500 33.9708334, 132.0875000 33.9708334, 132.0875000 33.9666667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral