メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.40306388111 43.81908531326, 142.402673940765 43.8193656960318, 142.402229297655 43.8196853897544, 142.401841252863 43.8199643952113, 142.401429161305 43.8202606961721, 142.401052207432 43.8205317198988, 142.400587407068 43.8208659018616, 142.399029904744 43.8197766610418, 142.399486218586 43.8194459420997, 142.399887376328 43.8191551838211, 142.400276143755 43.8188733889015, 142.400679570628 43.8185809900574, 142.401115066315 43.8182653236252, 142.401534673217 43.8179611745573, 142.40306388111 43.81908531326)) ^^http://www.opengis.net/ont/geosparql#wktLiteral