メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.997085985569 43.5540063890524, 144.996286944866 43.5534786304392, 144.996394625439 43.5533886705818, 144.996994892748 43.5529091130543, 144.997057491265 43.5529504656936, 144.997175034585 43.5528478566666, 144.997410976115 43.5529973039323, 144.997819978215 43.5532783392011, 144.997873280823 43.5533150636083, 144.997761857849 43.5534119366186, 144.997217819864 43.5538990412098, 144.997085985569 43.5540063890524)) ^^http://www.opengis.net/ont/geosparql#wktLiteral