メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.783509781735 35.4440203114676, 136.784373118945 35.4439681187823, 136.784416433073 35.4443708265691, 136.782398768065 35.444477237635, 136.782360855042 35.4440897591685, 136.783252726466 35.444035850664, 136.783270725319 35.4442300934246, 136.783526344131 35.4442137737043, 136.783509781735 35.4440203114676)) ^^http://www.opengis.net/ont/geosparql#wktLiteral