メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.905473020776 43.4997035828061, 141.904627127237 43.4998414047839, 141.904356120926 43.4987965590015, 141.904342495791 43.4987507709562, 141.905124043804 43.4986287914448, 141.905157860876 43.498623512968, 141.905473020776 43.4997035828061)) ^^http://www.opengis.net/ont/geosparql#wktLiteral