メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.824236115791 35.3826597097695, 136.821762590548 35.3831409621698, 136.821240187961 35.3814208022625, 136.820829189307 35.37998066646, 136.820337935691 35.378325588341, 136.820621562851 35.3782628757152, 136.821452253636 35.3784345256527, 136.821817470788 35.3784899962552, 136.822262075897 35.3785351253899, 136.822848639263 35.3786153709651, 136.82317828278 35.3786553833214, 136.823628207658 35.3804849027109, 136.823691072981 35.3807113393628, 136.824236115791 35.3826597097695)) ^^http://www.opengis.net/ont/geosparql#wktLiteral