メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.483302307001 34.1827995060891, 131.483954468444 34.1832384375643, 131.484765977339 34.1838026427089, 131.484327737475 34.1842516961206, 131.48403735522 34.1845615445265, 131.48317136051 34.1841801639919, 131.482653963719 34.1839597688673, 131.482535487126 34.1839068433242, 131.48238357151 34.1838390810287, 131.481861450797 34.1836061177085, 131.482654831229 34.1823638364007, 131.483302307001 34.1827995060891)) ^^http://www.opengis.net/ont/geosparql#wktLiteral