メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.329603094223 43.1101862317536, 141.329934659147 43.1105185972387, 141.330241348705 43.1108200284547, 141.33057918417 43.1111570801249, 141.330087385565 43.111415017652, 141.329809075736 43.1116023070956, 141.32907305805 43.1120139066937, 141.328587952881 43.1115247421721, 141.327716105546 43.1106455852834, 141.328475031831 43.1102418401824, 141.329251163166 43.1098167096058, 141.329603094223 43.1101862317536)) ^^http://www.opengis.net/ont/geosparql#wktLiteral