メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.88480679366 43.3356879963564, 141.884862445042 43.3359308782628, 141.8849318274 43.3362740221163, 141.884316001009 43.3363624416902, 141.883709570322 43.3364188864533, 141.883755271755 43.3366452812829, 141.881360521699 43.3367055446909, 141.881115770384 43.3359665183659, 141.88094186529 43.3352993865261, 141.883032379648 43.3352530641867, 141.884692282765 43.3352188236308, 141.88480679366 43.3356879963564)) ^^http://www.opengis.net/ont/geosparql#wktLiteral