メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.955982563687 43.5494491430721, 144.956334892337 43.5492770609122, 144.956364646943 43.5492506552813, 144.956527350531 43.5493518910695, 144.956236766475 43.5495900520535, 144.954932052337 43.5505722185427, 144.954598970794 43.5506130137466, 144.954270674826 43.5506569988794, 144.955148963994 43.549958125331, 144.95503703212 43.5498939377891, 144.954822693136 43.5497709272431, 144.955535518168 43.5491815514274, 144.955884413015 43.5493946855903, 144.955982563687 43.5494491430721)) ^^http://www.opengis.net/ont/geosparql#wktLiteral