メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.906176521972 43.4785860545581, 141.906306110831 43.478575118986, 141.906384613247 43.4788941712448, 141.90644017569 43.479082772549, 141.906687251825 43.4799214296887, 141.905709340347 43.4800663984331, 141.905464163991 43.4792353042718, 141.905411326431 43.4790561694846, 141.905353728641 43.4788608805764, 141.905310006054 43.478717498486, 141.905181590983 43.4782746294128, 141.905670940731 43.4782072494863, 141.906065944431 43.4781513980068, 141.906176521972 43.4785860545581)) ^^http://www.opengis.net/ont/geosparql#wktLiteral