メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.34195057338 43.0619140935999, 141.342039901353 43.0619261556928, 141.342110357514 43.0619355058363, 141.341833942352 43.0631168859302, 141.340195036792 43.0628934995367, 141.340388781093 43.0620638877557, 141.340479202159 43.0617154911411, 141.341276207403 43.0618230329926, 141.341653885024 43.061874032071, 141.34195057338 43.0619140935999)) ^^http://www.opengis.net/ont/geosparql#wktLiteral