メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.596619015927 43.2987497589739, 144.596595587883 43.2987564284183, 144.596272353412 43.2978781845319, 144.596540605318 43.2978184577693, 144.596656577223 43.2977746568992, 144.596837794524 43.2977200216071, 144.59690597514 43.2976803657339, 144.596901757739 43.2976708883455, 144.596438628398 43.2966450255213, 144.596193264612 43.2961736210508, 144.596311281255 43.2961730266479, 144.596806970018 43.2961441442553, 144.597019541197 43.2961437877912, 144.598036639157 43.2983934305896, 144.596619015927 43.2987497589739)) ^^http://www.opengis.net/ont/geosparql#wktLiteral