メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.817919191797 33.8700435753809, 132.817755648824 33.8702864530543, 132.817201081326 33.8710914382491, 132.815927585846 33.8704723200399, 132.816500582523 33.8696657524166, 132.81720198646 33.8686586511555, 132.817668583234 33.8688879831657, 132.818463300853 33.8692674772387, 132.817919191797 33.8700435753809)) ^^http://www.opengis.net/ont/geosparql#wktLiteral