メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.876308350323 43.0170504174902, 142.875509068069 43.0176887251325, 142.874766301952 43.017253286201, 142.874652361076 43.0171842104237, 142.874764044523 43.0170828206419, 142.874841493413 43.0170124918407, 142.874944677393 43.0169188845999, 142.875414760549 43.0165287384314, 142.876208611469 43.0169974407301, 142.876308350323 43.0170504174902)) ^^http://www.opengis.net/ont/geosparql#wktLiteral