メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.8375000 34.5041667, 132.8437500 34.5041667, 132.8437500 34.5083333, 132.8375000 34.5083333, 132.8375000 34.5041667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral