メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.545761571608 34.0654798473243, 134.545041757045 34.0655061865989, 134.544960490447 34.0638442181345, 134.544959044073 34.0638090139785, 134.545519099005 34.0637997408377, 134.545688582214 34.0637971713017, 134.545689914216 34.0638228686337, 134.545761571608 34.0654798473243)) ^^http://www.opengis.net/ont/geosparql#wktLiteral