メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.259816594446 38.3796171991684, 140.263009446094 38.3796677969027, 140.263016114401 38.3810734093485, 140.262004004008 38.3810580746991, 140.261989679619 38.3817538274246, 140.262001945531 38.3818826902154, 140.260612265858 38.3826587418163, 140.25992701347 38.381862023568, 140.259788829737 38.3817012936369, 140.257517081536 38.3816624301444, 140.257291575362 38.3816717392873, 140.257291338223 38.3811490619904, 140.25729052272 38.3795770904816, 140.259816594446 38.3796171991684)) ^^http://www.opengis.net/ont/geosparql#wktLiteral