メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.927910085204 35.3232633199846, 136.92817987169 35.3236139929248, 136.928060848391 35.3238227522324, 136.927182327056 35.3242864162603, 136.926710767572 35.3237746328009, 136.926466991721 35.3234992890316, 136.926812170325 35.3234239472301, 136.927705949316 35.3230505199699, 136.927910085204 35.3232633199846)) ^^http://www.opengis.net/ont/geosparql#wktLiteral