メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.050816008028 42.920936470112, 143.050741864983 42.920930658412, 143.050711497952 42.9209282688175, 143.049485699809 42.9208373049705, 143.049413380038 42.920831901015, 143.048477073893 42.9207602178431, 143.048667975362 42.9193775667094, 143.048758634649 42.9187507683701, 143.04882300108 42.9182741014915, 143.049579263513 42.9183267114176, 143.050336827609 42.9183760717853, 143.051106588063 42.9184362430679, 143.050906591512 42.9203496903569, 143.050816008028 42.920936470112)) ^^http://www.opengis.net/ont/geosparql#wktLiteral