メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.70205583839 44.3665351601209, 141.701993166928 44.3665760997447, 141.701518548311 44.3668864690557, 141.701050282524 44.3671828047528, 141.701001815443 44.3672137553213, 141.70063675126 44.3669238445813, 141.699914107188 44.366352141968, 141.699957597246 44.3663238391, 141.700409077577 44.3660299936706, 141.700890731402 44.3657164983004, 141.700967652583 44.3656664530582, 141.701833142956 44.3663559470401, 141.70205583839 44.3665351601209)) ^^http://www.opengis.net/ont/geosparql#wktLiteral