メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.207677765151 36.6867901666424, 137.207778774868 36.6872818380263, 137.207397963359 36.6873280899845, 137.206495212032 36.687441056938, 137.206363569195 36.6869631937215, 137.205972297898 36.6870126835857, 137.205660014062 36.6870522177205, 137.205252445779 36.687111144415, 137.205092253121 36.6865780934871, 137.205845977507 36.6864617391152, 137.205879085321 36.6865971861798, 137.206677860515 36.6864832046053, 137.207210992832 36.6864098674251, 137.207863673858 36.6863174734036, 137.207941392253 36.6867571928905, 137.207677765151 36.6867901666424)) ^^http://www.opengis.net/ont/geosparql#wktLiteral