メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.343891524079 44.4782837635129, 142.343263085437 44.4781332778902, 142.343237693207 44.4781271820626, 142.341084332183 44.477611476056, 142.341156661432 44.4774574677298, 142.341749897643 44.4762199370266, 142.344527288316 44.4769025410479, 142.344437390054 44.4770978405886, 142.344411968487 44.4771530575283, 142.343891524079 44.4782837635129)) ^^http://www.opengis.net/ont/geosparql#wktLiteral