メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.409535942586 43.7361689140433, 142.409575576019 43.7364745628847, 142.40957583054 43.7365710956799, 142.407594354902 43.7366692315498, 142.406232205112 43.7367357728986, 142.406200153704 43.7363420177202, 142.405506687996 43.7363945849175, 142.405478939416 43.7361545625908, 142.406374381159 43.7361061192167, 142.407533879668 43.7360476751644, 142.407517864528 43.7358564234945, 142.409501570433 43.7357586903923, 142.409518787019 43.7359758704026, 142.409535942586 43.7361689140433)) ^^http://www.opengis.net/ont/geosparql#wktLiteral