メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.994537271062 34.9777401138418, 136.993845707721 34.977446438794, 136.993275726616 34.9772295575281, 136.993922621549 34.9760478605013, 136.994210988651 34.9762506727947, 136.994449282354 34.9764376377208, 136.994757039667 34.9764930095067, 136.995058338559 34.9768009816523, 136.995239284653 34.9770192724844, 136.995413103471 34.9772139607696, 136.994537271062 34.9777401138418)) ^^http://www.opengis.net/ont/geosparql#wktLiteral