メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.334226085042 43.0445332326659, 141.334184581069 43.0449961617918, 141.334157629094 43.0452028562037, 141.332412442762 43.0451002589292, 141.332417448814 43.0450602816142, 141.332453444909 43.044755479549, 141.332494707347 43.0444061317957, 141.332543746763 43.0444098306009, 141.3325725626 43.0442328308818, 141.33262808937 43.0437304178535, 141.333238005732 43.0437639302174, 141.333522270277 43.0437794990464, 141.334312307048 43.0438228887093, 141.334226085042 43.0445332326659)) ^^http://www.opengis.net/ont/geosparql#wktLiteral