メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.311478940536 43.0864938764344, 141.311832424216 43.0868214842674, 141.311300984786 43.0871260074108, 141.310857893567 43.0873816719676, 141.310928649725 43.0874482912976, 141.310493611282 43.0877042312248, 141.310398851722 43.0876133617799, 141.309684901802 43.0869636348374, 141.309793672107 43.0868974356746, 141.310079587988 43.0867348325881, 141.310132071505 43.0867049845107, 141.31022648066 43.0866491453408, 141.310825587485 43.0862993991783, 141.311096531246 43.0861317095758, 141.311478940536 43.0864938764344)) ^^http://www.opengis.net/ont/geosparql#wktLiteral