メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.2875000 33.1666667, 132.2937500 33.1666667, 132.2937500 33.1708334, 132.2875000 33.1708334, 132.2875000 33.1666667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral