メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.332007280658 43.1125872613214, 141.331507963107 43.1128469026948, 141.330473931976 43.1133956435812, 141.330439675261 43.1134138639345, 141.32907305805 43.1120139066937, 141.329809075736 43.1116023070956, 141.330087385565 43.111415017652, 141.33057918417 43.1111570801249, 141.33125288153 43.1118418538754, 141.332012698887 43.1125844206723, 141.332007280658 43.1125872613214)) ^^http://www.opengis.net/ont/geosparql#wktLiteral