メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.322434083414 43.064716334251, 141.322403065721 43.0648966170075, 141.32238876544 43.0649797704023, 141.322449033414 43.0653210033428, 141.322130494182 43.0652817770022, 141.321724476714 43.065223413071, 141.321549411155 43.0651985714864, 141.320998067734 43.0651217969148, 141.321137691693 43.0645339962444, 141.321276767631 43.0639758699162, 141.321922990451 43.0640638945454, 141.322340144814 43.0641146817371, 141.32227943566 43.0643429694047, 141.322471498154 43.064499814105, 141.322434083414 43.064716334251)) ^^http://www.opengis.net/ont/geosparql#wktLiteral