メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.703221506193 44.3674659685108, 141.704343199902 44.3683436425615, 141.704296794366 44.3683745342287, 141.704021799181 44.3686056758899, 141.703895308551 44.3687208078247, 141.703787713966 44.3688224955946, 141.703700064435 44.3689243833691, 141.703522397447 44.3691825332414, 141.703507675029 44.3692055608333, 141.702416572254 44.3683372037037, 141.702172099561 44.3681430844039, 141.701001815443 44.3672137553213, 141.701050282524 44.3671828047528, 141.701518548311 44.3668864690557, 141.701993166928 44.3665760997447, 141.70205583839 44.3665351601209, 141.702897552203 44.3672124378169, 141.703221506193 44.3674659685108)) ^^http://www.opengis.net/ont/geosparql#wktLiteral