メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.887310798128 43.3388353333121, 141.88787976745 43.33873458551, 141.887830894082 43.3390405047451, 141.887645882807 43.3404166877531, 141.887453987692 43.3416490241364, 141.887166441941 43.3433247642479, 141.886849861854 43.3446965914492, 141.886765528541 43.3450688598088, 141.886441519844 43.3433674821369, 141.886097026316 43.3416784931587, 141.885766600527 43.3399526265893, 141.885608614194 43.3391671124105, 141.885640425784 43.3391609539946, 141.887310798128 43.3388353333121)) ^^http://www.opengis.net/ont/geosparql#wktLiteral