メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.280516029343 43.0853744403388, 141.280890610542 43.0857286930888, 141.281282975908 43.086099761481, 141.28167960824 43.0864925964582, 141.280680346724 43.0869425491242, 141.280588796314 43.0870831352781, 141.280196271719 43.0867281680923, 141.279811609833 43.0863676398512, 141.279436397043 43.0860166849052, 141.278501676489 43.0851502535836, 141.278792770988 43.0849757733731, 141.279398779921 43.0846190664833, 141.279620151081 43.0844968107533, 141.279988099413 43.0848572706351, 141.280516029343 43.0853744403388)) ^^http://www.opengis.net/ont/geosparql#wktLiteral