メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.252126056949 43.1275968571273, 141.253358803664 43.1285281900825, 141.252758930057 43.1289496561696, 141.252569139794 43.1290887332343, 141.252166457552 43.129370199707, 141.250828133015 43.1283595162122, 141.250577695343 43.1284843465006, 141.249995019406 43.1280553911638, 141.251892708319 43.1270962636114, 141.252366029079 43.1274598362886, 141.252126056949 43.1275968571273)) ^^http://www.opengis.net/ont/geosparql#wktLiteral