メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.036616090423 42.9187053502743, 143.037336015459 42.9187562556936, 143.037340518165 42.9187566461065, 143.037192121539 42.9199492979014, 143.0370718714 42.9199410503051, 143.036473083059 42.9198976833772, 143.036320357341 42.9198866328047, 143.035784517427 42.919849442213, 143.035841381511 42.9194295935789, 143.035891765142 42.9190646479997, 143.035902847032 42.9189842526316, 143.0359494671 42.9186582261997, 143.036616090423 42.9187053502743)) ^^http://www.opengis.net/ont/geosparql#wktLiteral