メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.384219261451 43.066511892476, 141.383633377003 43.0673500066596, 141.383195104104 43.0678265477053, 141.382174347372 43.0672629291432, 141.381888024913 43.0674457954555, 141.381994107783 43.0673375887966, 141.382718594108 43.0660321364252, 141.383040347849 43.0661185478358, 141.383624714947 43.0663224964252, 141.383984921587 43.0664371871559, 141.384219261451 43.066511892476)) ^^http://www.opengis.net/ont/geosparql#wktLiteral