メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.291003314478 43.0668204092921, 141.291468355324 43.0671953613181, 141.290904594219 43.0674979757596, 141.290489311773 43.0677210234327, 141.290409022124 43.0677640950334, 141.289849197698 43.0680657518761, 141.289743364402 43.0681228149491, 141.289606102405 43.0682083786315, 141.288775935326 43.0673942418321, 141.288996793655 43.0672688015048, 141.289245361098 43.0671318474721, 141.289643385199 43.0669144261824, 141.290508240204 43.0664279012407, 141.291003314478 43.0668204092921)) ^^http://www.opengis.net/ont/geosparql#wktLiteral