メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.728590630268 35.1831606523139, 136.728611546344 35.1844986666359, 136.727749145431 35.184501381727, 136.727740158936 35.1831644680482, 136.72728391458 35.1831544301562, 136.727264031682 35.1827365471242, 136.727369273485 35.182737915744, 136.727356888673 35.1822656246973, 136.727723816303 35.1822628029089, 136.727906704055 35.1822530439402, 136.728220362024 35.1822427034709, 136.728610894676 35.182228978377, 136.728604162627 35.1822925447432, 136.728590630268 35.1831606523139)) ^^http://www.opengis.net/ont/geosparql#wktLiteral