メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.189806221744 43.5270809898203, 142.191001153806 43.5271847938678, 142.191200325888 43.5284583868502, 142.191138577065 43.5287519410266, 142.19078535797 43.5292417162182, 142.189993662547 43.5299568179067, 142.189493627076 43.530285131368, 142.188867984966 43.5306114423202, 142.188146235379 43.5308365792761, 142.188399836586 43.5289721802892, 142.188414240113 43.5287199155025, 142.188535476054 43.5279346462481, 142.188602981881 43.5274973614867, 142.188660103223 43.5269980486874, 142.189806221744 43.5270809898203)) ^^http://www.opengis.net/ont/geosparql#wktLiteral