メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.363582593694 43.0780022039919, 141.364423158552 43.0781203900436, 141.364120666718 43.0792236886412, 141.363293943755 43.0791160856999, 141.362462998201 43.0790087951908, 141.362536031436 43.0787283985729, 141.362607339071 43.0784545987282, 141.362676021856 43.0781831703214, 141.362753153169 43.0778779793249, 141.363582593694 43.0780022039919)) ^^http://www.opengis.net/ont/geosparql#wktLiteral