メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.986708091327 43.1077157809756, 142.983517751969 43.1083116511725, 142.982528155382 43.1084964890406, 142.982015474396 43.1071044128671, 142.981844460935 43.1066406924032, 142.984089083121 43.1062179063693, 142.984202234371 43.1061965740788, 142.986170199089 43.1058258055314, 142.986432894735 43.1057763604696, 142.986737880601 43.1066912260163, 142.987032954513 43.1076551036893, 142.986777862109 43.1077027429141, 142.986708091327 43.1077157809756)) ^^http://www.opengis.net/ont/geosparql#wktLiteral