メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.879074636834 43.0183466380637, 142.878327880777 43.0179086420458, 142.87837100447 43.0177671136729, 142.878537470689 43.0172206585508, 142.878588475512 43.0170532768445, 142.878667421333 43.0167171624932, 142.878670556639 43.0167190447611, 142.878888455995 43.0168503501188, 142.87999527041 43.0175671207072, 142.879207517538 43.0182330314654, 142.879074636834 43.0183466380637)) ^^http://www.opengis.net/ont/geosparql#wktLiteral