メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.874464434271 43.3402414007217, 141.875078945269 43.3401360949869, 141.875280795883 43.3401071476584, 141.875792405113 43.3420938260564, 141.875018974275 43.3422123971896, 141.873717761126 43.3424243088573, 141.873046014171 43.342533986975, 141.872571290492 43.3426174463111, 141.872082450877 43.342708241131, 141.87178313684 43.341724707551, 141.871481364504 43.3406961555022, 141.87199253295 43.3406266042554, 141.872460651654 43.3405577520511, 141.873137301796 43.3404509745913, 141.873799265132 43.3403464652953, 141.874464434271 43.3402414007217)) ^^http://www.opengis.net/ont/geosparql#wktLiteral