メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.702424782226 44.3692033487022, 141.702475084505 44.3691428011128, 141.701925949056 44.3688069717794, 141.70195234601 44.3687880794206, 141.700436876504 44.3675749102832, 141.700497670507 44.3675360020051, 141.701001815443 44.3672137553213, 141.702172099561 44.3681430844039, 141.702416572254 44.3683372037037, 141.703507675029 44.3692055608333, 141.703328330221 44.3694857832283, 141.703263463194 44.3695810418501, 141.702424782226 44.3692033487022)) ^^http://www.opengis.net/ont/geosparql#wktLiteral