メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.357987486467 38.2818996848885, 140.355052195292 38.2826186825642, 140.354975671152 38.2824674567038, 140.354932146066 38.2823362156579, 140.354112318458 38.2800100341557, 140.353439620243 38.2781460590153, 140.353586901794 38.2781061167613, 140.355024294175 38.2777831226743, 140.356821165604 38.2802647457678, 140.357987486467 38.2818996848885)) ^^http://www.opengis.net/ont/geosparql#wktLiteral