メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.386022386952 43.0388549380172, 141.385508439053 43.0391581225775, 141.385420176258 43.0392166040778, 141.384958671332 43.0394855789685, 141.384688781168 43.0396621798042, 141.384233700665 43.0392686167515, 141.384222792603 43.0391988366973, 141.384006894572 43.0389925433691, 141.383794348099 43.0388206655468, 141.384168501381 43.0385999849662, 141.384627176261 43.0383343676692, 141.385130364569 43.0380461566927, 141.385590388961 43.0384632558526, 141.386022386952 43.0388549380172)) ^^http://www.opengis.net/ont/geosparql#wktLiteral