メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.585392878098 43.3368161016269, 145.585031791885 43.3373010788206, 145.583719943574 43.3367649308758, 145.584100612246 43.3362644782693, 145.584471131911 43.3357899164964, 145.585771890266 43.3363348889432, 145.585392878098 43.3368161016269)) ^^http://www.opengis.net/ont/geosparql#wktLiteral