メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.530498049904 36.5016186688307, 136.530164961606 36.5018794192444, 136.529498905885 36.5023847607824, 136.529391014328 36.5023490808137, 136.528499694615 36.5015983183143, 136.528296107903 36.5014331719284, 136.528292642518 36.5014303721133, 136.528767802019 36.5010789713663, 136.529314112634 36.5006587798486, 136.530498049904 36.5016186688307)) ^^http://www.opengis.net/ont/geosparql#wktLiteral