メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.392456424665 43.8114250532266, 142.393244501658 43.812008762396, 142.39275473687 43.812373665843, 142.392283570652 43.8127250629426, 142.391799572194 43.8130796913838, 142.391785529138 43.8130899924184, 142.391301882458 43.8134204094804, 142.390776906096 43.8137838573934, 142.389976428528 43.8132121367846, 142.389209095189 43.8126373626828, 142.389700931135 43.8122619725782, 142.390184543617 43.8119225611924, 142.390695014413 43.8115576405737, 142.391151720607 43.8112197521727, 142.391637331968 43.8108548596812, 142.392456424665 43.8114250532266)) ^^http://www.opengis.net/ont/geosparql#wktLiteral