メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.932670290023 34.8969753462211, 136.932598826533 34.8973256695798, 136.932530930579 34.8979803987233, 136.931788554702 34.8979415024128, 136.931284315704 34.8979150335455, 136.930981039859 34.8962666625866, 136.931368409377 34.8962283217289, 136.931754664216 34.8962142063943, 136.932183194309 34.8961984105365, 136.932358754404 34.8961955784798, 136.93283087514 34.8961881039087, 136.932670290023 34.8969753462211)) ^^http://www.opengis.net/ont/geosparql#wktLiteral