メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.903665052315 43.8083549824362, 143.903079109431 43.8086420019244, 143.902675637298 43.8088418724073, 143.902224840181 43.8090723290887, 143.901797510646 43.8092876433826, 143.900505102619 43.8079708534469, 143.900904618972 43.8077682350105, 143.901017614402 43.8077108207599, 143.901785607795 43.8073212520173, 143.902377733333 43.8070121036365, 143.902779397886 43.8074366656936, 143.90307581362 43.8077346973726, 143.903665052315 43.8083549824362)) ^^http://www.opengis.net/ont/geosparql#wktLiteral