メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.754562259942 43.2062336032065, 141.753482410552 43.2073926443908, 141.753233959096 43.2076669716417, 141.752878535909 43.2074982589816, 141.752519183505 43.2073164464929, 141.752370051623 43.2072410394723, 141.752321554609 43.2072164953631, 141.75367497689 43.2057989307829, 141.753767417923 43.2058461697777, 141.754121944043 43.2060178994333, 141.754481355533 43.2061920419107, 141.754562259942 43.2062336032065)) ^^http://www.opengis.net/ont/geosparql#wktLiteral