メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.435089463657 43.8078475725, 142.435341747353 43.8079984566518, 142.436702714017 43.8088124251789, 142.436100989908 43.8093096364436, 142.435655375944 43.8096870638606, 142.435541620368 43.8097735315521, 142.434769582809 43.8092913161817, 142.433974346227 43.8087945767786, 142.433472733537 43.8084902816079, 142.434603887885 43.8075543506734, 142.435089463657 43.8078475725)) ^^http://www.opengis.net/ont/geosparql#wktLiteral