メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.358281490753 38.2921127494011, 140.354907709491 38.2934803507369, 140.352818547883 38.2902750442204, 140.353564549514 38.2899728910132, 140.35265462394 38.288626996814, 140.352812717911 38.288589493323, 140.353100028606 38.2886009458512, 140.353687464176 38.2886651496167, 140.35436610175 38.2887605522588, 140.354822955493 38.2888139408269, 140.355097118978 38.2888356113873, 140.355468882467 38.2888039022381, 140.356006967761 38.2886505331504, 140.358281490753 38.2921127494011)) ^^http://www.opengis.net/ont/geosparql#wktLiteral