メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.409445607311 43.7353247121358, 142.409456374432 43.7354262229198, 142.409501570433 43.7357586903923, 142.407517864528 43.7358564234945, 142.407533879668 43.7360476751644, 142.406374381159 43.7361061192167, 142.405478939416 43.7361545625908, 142.40544279509 43.7358220453033, 142.407454213994 43.7352489380271, 142.408043419079 43.735079365782, 142.408229534257 43.7350453577368, 142.408508780368 43.735022473307, 142.408803541952 43.7349995673846, 142.40939294717 43.7349708783372, 142.409445607311 43.7353247121358)) ^^http://www.opengis.net/ont/geosparql#wktLiteral