メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.342384570197 43.0558451025128, 141.342849336263 43.0559098359488, 141.343574188267 43.056014467369, 141.343422686895 43.056585186601, 141.343374111063 43.0566078696082, 141.343240025856 43.0571549562672, 141.341512135637 43.0569280023398, 141.341654013884 43.0563478545376, 141.341800203954 43.0557678118083, 141.342384570197 43.0558451025128)) ^^http://www.opengis.net/ont/geosparql#wktLiteral