メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.45577941068 43.0446449529228, 144.455929180044 43.0449978469693, 144.456222163453 43.0455903242428, 144.45563618987 43.0457420020293, 144.455066027047 43.0458800797622, 144.454910418921 43.0457653526892, 144.454932111466 43.0452364282666, 144.454948148715 43.0448492505147, 144.454964054935 43.0444584889299, 144.455610123578 43.04428779292, 144.45577941068 43.0446449529228)) ^^http://www.opengis.net/ont/geosparql#wktLiteral