メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.329067254363 43.0685666816488, 141.328993763713 43.0688682934627, 141.32893158336 43.0691064890661, 141.328920272864 43.0691763049606, 141.328862683714 43.0693962529401, 141.328781697671 43.0697116600836, 141.327193414398 43.0695064256771, 141.327353419586 43.0689056294439, 141.327504086371 43.0683519488316, 141.328009084934 43.0684195310286, 141.329067254363 43.0685666816488)) ^^http://www.opengis.net/ont/geosparql#wktLiteral