メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.444841714409 43.7711436507287, 142.44485803815 43.7713313118444, 142.444934264812 43.7720592224101, 142.445085891224 43.7732072991751, 142.44445662639 43.7732341679315, 142.444459551276 43.7733125370204, 142.441566873922 43.7734388493484, 142.441457977548 43.772454190058, 142.441439739151 43.7722452063494, 142.441396076797 43.7719053261904, 142.441337401415 43.7713332670682, 142.44128997757 43.7706986219087, 142.442417050295 43.7706248666706, 142.442855890423 43.7706067136095, 142.442869268101 43.770606001828, 142.444758458495 43.7705055004776, 142.444841714409 43.7711436507287)) ^^http://www.opengis.net/ont/geosparql#wktLiteral