メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.956764459728 43.5482741279447, 144.956689663245 43.5482187676938, 144.956348952767 43.5485075505646, 144.955789441963 43.548150751406, 144.956143640283 43.5478738161372, 144.955877949237 43.5476963316775, 144.955815266474 43.5476567151974, 144.956337742443 43.5472473563521, 144.957285473371 43.5478451462721, 144.956764459728 43.5482741279447)) ^^http://www.opengis.net/ont/geosparql#wktLiteral