メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.658454847989 43.0641129923076, 141.658894552194 43.0643413059044, 141.659390692862 43.0645812327449, 141.659713293181 43.0647739851437, 141.65980192915 43.0651033061946, 141.660223827302 43.0650490067762, 141.660503860792 43.0647791862118, 141.660846551757 43.0644117168011, 141.661853888298 43.0649292553501, 141.662244303544 43.0651229819238, 141.660355906532 43.0671512952848, 141.659523601 43.0667292413976, 141.658512421606 43.0662164460962, 141.656837058041 43.0653600861149, 141.657293073037 43.0648908840218, 141.657506208825 43.0646714317649, 141.658137863519 43.063945585686, 141.658454847989 43.0641129923076)) ^^http://www.opengis.net/ont/geosparql#wktLiteral