メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.324168504979 43.7618400016485, 142.323974850216 43.7617766617794, 142.323453864762 43.7616367056753, 142.32315628669 43.761556536831, 142.323246819565 43.7613982906753, 142.323768162559 43.7604756889274, 142.323757457177 43.7604634255051, 142.324803812464 43.760769398919, 142.324794011248 43.760787355434, 142.324168504979 43.7618400016485)) ^^http://www.opengis.net/ont/geosparql#wktLiteral