メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.30694696742 43.9418832403185, 144.306759459953 43.9419317404638, 144.305091057892 43.939178437774, 144.304331755178 43.9379797851822, 144.303688544398 43.9369129753132, 144.297557920458 43.9387308660776, 144.289352743614 43.9255442255789, 144.281455916298 43.9118326071214, 144.291291589601 43.9088177726503, 144.307062169535 43.9039813004811, 144.325883951802 43.93634672141, 144.308033822142 43.9416021975794, 144.30694696742 43.9418832403185)) ^^http://www.opengis.net/ont/geosparql#wktLiteral