メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.319656739548 43.0536170985748, 141.319767961982 43.0536441656684, 141.320071400758 43.0537201955884, 141.320683022504 43.0538630805815, 141.320891472352 43.0539168163796, 141.320765015876 43.0544218072187, 141.320632635736 43.0549695809611, 141.319798662269 43.0548415566536, 141.319645044914 43.0548211080368, 141.319457031544 43.0547920102308, 141.319118322107 43.0547396031766, 141.318949473895 43.0547179044583, 141.319070335657 43.0542350235913, 141.319104355826 43.0540973850964, 141.319168214805 43.0538637790981, 141.319213508798 43.0536845974324, 141.319290242936 43.0535317632252, 141.319339757399 43.0535425741963, 141.319656739548 43.0536170985748)) ^^http://www.opengis.net/ont/geosparql#wktLiteral