メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.761407325846 42.8972625116594, 140.761531485257 42.8984852328662, 140.760534056082 42.8985300489979, 140.760478701524 42.898532562041, 140.759275494828 42.8985932521965, 140.759144185056 42.8971488912325, 140.759101302817 42.8966173967893, 140.759060307426 42.8966195338856, 140.759015855913 42.8961015928786, 140.761277512977 42.8959846465377, 140.761330538418 42.8965248533201, 140.761407325846 42.8972625116594)) ^^http://www.opengis.net/ont/geosparql#wktLiteral