メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.359993704263 43.0655754684954, 141.360201840879 43.0656029680687, 141.360930791816 43.065693028242, 141.360619530089 43.0669004214758, 141.359891736947 43.0668221135912, 141.359697001266 43.0667963363142, 141.359331464377 43.0667479188332, 141.35909843334 43.0667170578629, 141.359405580419 43.0654978211611, 141.359791503443 43.0655487879978, 141.359993704263 43.0655754684954)) ^^http://www.opengis.net/ont/geosparql#wktLiteral