メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.836764461178 34.6894225897256, 135.836739140404 34.6902477217406, 135.836432169056 34.6902233662375, 135.83615571072 34.6901897534709, 135.835949634539 34.6901645454051, 135.83562297463 34.6900935352213, 135.835512443628 34.6900518333917, 135.835497500471 34.6899812410621, 135.835447595488 34.6897984769502, 135.835435395758 34.6893102351884, 135.836764461178 34.6894225897256)) ^^http://www.opengis.net/ont/geosparql#wktLiteral