メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.343010462167 43.0340083395845, 141.342921810361 43.0346899113011, 141.341915801493 43.0346260902886, 141.341286427961 43.034591554847, 141.340971777996 43.034571895565, 141.341060439631 43.0338716879616, 141.34115528211 43.0332007867072, 141.341271476199 43.0332268177673, 141.342168321096 43.033286754638, 141.343102753065 43.0333595009407, 141.343010462167 43.0340083395845)) ^^http://www.opengis.net/ont/geosparql#wktLiteral