メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.165322895008 36.0432315927667, 136.164109221966 36.0431479404083, 136.164681665588 36.0403494006223, 136.164849733387 36.0403762074476, 136.16546761719 36.0403922501235, 136.16548493902 36.0405621774754, 136.165472419258 36.0415159705204, 136.165322895008 36.0432315927667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral