メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.755813336116 35.4119969429593, 136.755818087562 35.4120524859168, 136.755124035154 35.4121241477755, 136.753503606584 35.4122564207151, 136.753482180895 35.4121227953077, 136.753469515598 35.4120424380846, 136.755100685656 35.4119112920778, 136.755087037448 35.411888711268, 136.755802921156 35.4118200828763, 136.755813336116 35.4119969429593)) ^^http://www.opengis.net/ont/geosparql#wktLiteral