メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.337188311198 43.0649419983305, 141.338033822067 43.065060500276, 141.337962041867 43.0653342829057, 141.337884257322 43.0656312260289, 141.337723604809 43.0662120597423, 141.33654112934 43.0660594266808, 141.336165361826 43.066016897586, 141.336319184946 43.0654125214749, 141.336466092452 43.0648407928199, 141.337071626695 43.0649256647607, 141.337188311198 43.0649419983305)) ^^http://www.opengis.net/ont/geosparql#wktLiteral