メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.057255418202 43.477225369758, 145.056736805069 43.478015598867, 145.056258260906 43.4785247255077, 145.055614021312 43.4784966354145, 145.054834951552 43.4785889340127, 145.054152622032 43.4787434052597, 145.052603143702 43.4779679742447, 145.05317248993 43.4774964713896, 145.056443829359 43.4748905293813, 145.057289681214 43.4747234826501, 145.057306547314 43.4746499001171, 145.057159955736 43.47441216651, 145.057268482496 43.4743162218678, 145.058114042988 43.4747928085967, 145.058213534065 43.4750975526805, 145.058510324426 43.4754340130795, 145.057956376881 43.4761571156817, 145.057724234206 43.4765110074088, 145.057255418202 43.477225369758)) ^^http://www.opengis.net/ont/geosparql#wktLiteral