メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.587576475557 35.3736845502389, 136.58798235307 35.3736906624834, 136.587963920174 35.3755382562335, 136.587885053792 35.3755360450255, 136.58663900435 35.3755384781475, 136.586225344103 35.3755134493231, 136.585825609126 35.3755008808959, 136.585861075881 35.373669927478, 136.585874764607 35.372572388836, 136.58722684827 35.3727398330052, 136.58748549188 35.3727702355388, 136.587596345987 35.3727833049897, 136.587576475557 35.3736845502389)) ^^http://www.opengis.net/ont/geosparql#wktLiteral