メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.336264323663 43.7553092097456, 142.336771899897 43.755471541977, 142.337542355968 43.7557040589816, 142.336899171714 43.7567989284387, 142.336268793734 43.7566127813484, 142.336092242332 43.756558365491, 142.335865067574 43.7564898878071, 142.335618427802 43.7564185954483, 142.335343225895 43.756334154745, 142.3351355161 43.7562703549195, 142.335778824423 43.7551609748482, 142.336163078237 43.7552810707267, 142.336264323663 43.7553092097456)) ^^http://www.opengis.net/ont/geosparql#wktLiteral