メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.310142852908 43.0899346383612, 141.310393971308 43.089790698795, 141.311324169313 43.090647134154, 141.311085127719 43.0907982073093, 141.311212059699 43.0909191595325, 141.3107694809 43.0911833376401, 141.310288691823 43.0914422066724, 141.310158251228 43.0913311412822, 141.309727868911 43.0915817009564, 141.30879082405 43.0907405990349, 141.309192249017 43.0905009158027, 141.309703473197 43.0902031992645, 141.310142852908 43.0899346383612)) ^^http://www.opengis.net/ont/geosparql#wktLiteral