メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.656775736976 43.0632779215179, 141.657258169805 43.0635152535102, 141.657698093891 43.0637247939851, 141.658137863519 43.063945585686, 141.657506208825 43.0646714317649, 141.657293073037 43.0648908840218, 141.656837058041 43.0653600861149, 141.65517166353 43.064504033815, 141.654685852688 43.0642540858064, 141.655124024396 43.0637910586838, 141.65521225675 43.0636979070278, 141.655515043706 43.0631791069329, 141.655865353326 43.0628093001147, 141.655870983642 43.0628024371961, 141.656415842764 43.0630853198015, 141.656775736976 43.0632779215179)) ^^http://www.opengis.net/ont/geosparql#wktLiteral