メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.227159572711 34.8342313862881, 137.227146430383 34.8349526124128, 137.227255857525 34.8350877853813, 137.227693901545 34.836079239269, 137.227721383226 34.8362820683906, 137.227625875672 34.8364962292725, 137.227298289473 34.8370598477556, 137.226792289637 34.8365868031866, 137.226532490162 34.8363953597628, 137.226300057039 34.8362489784605, 137.225889819218 34.835899842757, 137.225411286179 34.8355958159869, 137.224905487607 34.8353819532709, 137.224536423315 34.8352694433539, 137.224714036759 34.8352017428727, 137.224905308168 34.8351227663939, 137.225943646694 34.8347165685938, 137.227159572711 34.8342313862881)) ^^http://www.opengis.net/ont/geosparql#wktLiteral