メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.334810106159 43.7587258923299, 142.33561180707 43.7589763128861, 142.33533914131 43.7594527508563, 142.334975169183 43.76006342983, 142.334188585817 43.7598424746828, 142.333482307235 43.7596149298526, 142.33345309749 43.7596055288258, 142.334084826675 43.7584938676215, 142.334810106159 43.7587258923299)) ^^http://www.opengis.net/ont/geosparql#wktLiteral