メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.339186006651 43.0603465010103, 141.338908425778 43.0614995219197, 141.338010188631 43.0613759651001, 141.33736539137 43.0612892377851, 141.337481851685 43.0608482869886, 141.337676661252 43.0601495016044, 141.337811602373 43.0595939199643, 141.338568070429 43.0596969374155, 141.338532588344 43.0598259897057, 141.339190905497 43.0598990337906, 141.33923037845 43.0597854139829, 141.339322594488 43.0597953622261, 141.339186006651 43.0603465010103)) ^^http://www.opengis.net/ont/geosparql#wktLiteral