メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.506513399903 40.6103691929357, 140.506076048938 40.6100528121369, 140.505700093553 40.6097223889255, 140.505315903917 40.6093632348915, 140.505084414057 40.6090892273768, 140.505172774833 40.6090350917713, 140.505421763601 40.6087320580753, 140.505552847256 40.6085214234848, 140.505810631546 40.6081321526017, 140.505933390824 40.6079054506844, 140.506599411225 40.6081056185401, 140.507081214621 40.6082348277031, 140.506950875481 40.6086587969103, 140.506651135864 40.6098397771059, 140.506513399903 40.6103691929357)) ^^http://www.opengis.net/ont/geosparql#wktLiteral