メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.372975187957 43.069627139386, 141.371230074463 43.0693981972724, 141.371340901375 43.0689528777492, 141.371441174356 43.0685409527379, 141.372346810998 43.068547899526, 141.372406682516 43.0685469523826, 141.372711703928 43.068541976031, 141.37304768445 43.0685723301692, 141.373225311425 43.0685878268853, 141.373177918518 43.0688305230023, 141.372975187957 43.069627139386)) ^^http://www.opengis.net/ont/geosparql#wktLiteral