メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.3426908462 43.0367078228653, 141.342597128278 43.0373878046884, 141.342329306213 43.0373709105229, 141.341576202558 43.0373183060404, 141.341516531105 43.037314244896, 141.340632378538 43.0372542633009, 141.340674850673 43.0368712320865, 141.340719408308 43.0365741600449, 141.34071324276 43.0365372585537, 141.340803031628 43.0359038762069, 141.341358068349 43.0359416210928, 141.342093360624 43.0359915540067, 141.342769519763 43.0360336999752, 141.34276150589 43.0361221114735, 141.342708776316 43.0365125171573, 141.3426908462 43.0367078228653)) ^^http://www.opengis.net/ont/geosparql#wktLiteral