メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.423210480354 43.8263559902777, 142.422726395266 43.826713291548, 142.422563090105 43.826590212588, 142.422197179389 43.8268347341521, 142.422360490397 43.8269685382755, 142.420630721664 43.8281400847502, 142.420558076655 43.8280875009974, 142.418753009342 43.8267808867592, 142.418648457503 43.8267153450098, 142.418970795387 43.826490333012, 142.419052302446 43.8265472057731, 142.419784073953 43.8260259913714, 142.421254895874 43.8249620902304, 142.422420105507 43.8258022082297, 142.423210480354 43.8263559902777)) ^^http://www.opengis.net/ont/geosparql#wktLiteral