メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.061834547483 42.9232323701632, 143.061706099121 42.9242516205448, 143.061058340927 42.9242040239109, 143.060751227256 42.9241814419316, 143.061065391441 42.9216624496034, 143.061165898079 42.9217008419456, 143.061395255689 42.921713143008, 143.062000720932 42.9217704626913, 143.062029747068 42.9217727181513, 143.061942969433 42.9223719309427, 143.061834547483 42.9232323701632)) ^^http://www.opengis.net/ont/geosparql#wktLiteral