メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.3687500 34.5833333, 132.3750000 34.5833333, 132.3750000 34.5875000, 132.3687500 34.5875000, 132.3687500 34.5833333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral