メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.000512456006 34.895474845809, 136.999249644655 34.8960089255855, 136.999150693387 34.8959446289507, 136.999003276079 34.8958697008326, 136.998801082809 34.8961852916232, 136.998210586019 34.8958991694834, 136.998188997375 34.8949036375448, 136.998209147801 34.8947733727159, 136.998369002554 34.8944068022165, 136.998582028783 34.8939795253822, 136.999087957042 34.8941389715414, 137.000178262067 34.8944557136153, 136.999965123655 34.8945648654678, 137.000512456006 34.895474845809)) ^^http://www.opengis.net/ont/geosparql#wktLiteral