メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.369564539672 43.0373840839439, 141.369573210178 43.0374617250583, 141.369586221896 43.0375777294575, 141.369658936342 43.0379508280959, 141.369110666861 43.0379670065257, 141.368696684002 43.0379792225421, 141.367991068606 43.0379827207876, 141.36796386302 43.0378202596, 141.367956881243 43.037778851162, 141.367896538421 43.037419702317, 141.367864973354 43.0372403273437, 141.367806176071 43.0369139640278, 141.369466907943 43.0368694290036, 141.369564539672 43.0373840839439)) ^^http://www.opengis.net/ont/geosparql#wktLiteral