メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.983517751969 43.1083116511725, 142.986708091327 43.1077157809756, 142.987895359858 43.1110952479363, 142.986653950251 43.1114531416377, 142.983723902679 43.1119848881342, 142.983052337629 43.1098930596674, 142.983029277459 43.1098270270249, 142.982976251525 43.1096751711971, 142.982761588192 43.1091303596102, 142.982528155382 43.1084964890406, 142.983517751969 43.1083116511725)) ^^http://www.opengis.net/ont/geosparql#wktLiteral