メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.5312500 33.2250000, 132.5375000 33.2250000, 132.5375000 33.2291667, 132.5312500 33.2291667, 132.5312500 33.2250000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral