メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.9500000 34.7416667, 132.9562500 34.7416667, 132.9562500 34.7458334, 132.9500000 34.7458334, 132.9500000 34.7416667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral