メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.701963032329 44.3603993139945, 141.701544023182 44.3606693471538, 141.701529746433 44.3607656448066, 141.701035215364 44.3610828790312, 141.699982899382 44.3602322336244, 141.700259145207 44.3600375291101, 141.700432960036 44.3599226648577, 141.700936153398 44.3596058976551, 141.70097253493 44.359582549688, 141.70198674595 44.3603840284825, 141.701963032329 44.3603993139945)) ^^http://www.opengis.net/ont/geosparql#wktLiteral