メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.260404058672 43.1992124922168, 144.260214323335 43.1992072473314, 144.258701250865 43.1996926277077, 144.257931007104 43.1983664616268, 144.257682885514 43.1976948546286, 144.257732112377 43.1971970751002, 144.257974925091 43.1967342944237, 144.259278549045 43.1965292605408, 144.261411548047 43.1960268550982, 144.261787113558 43.1959073785052, 144.262010768411 43.1958511229457, 144.261990145691 43.1958905156931, 144.261341047894 43.1971340238708, 144.261054532185 43.1977697353685, 144.260404058672 43.1992124922168)) ^^http://www.opengis.net/ont/geosparql#wktLiteral