メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.248815894112 33.9528262039508, 131.249209993039 33.9532940205411, 131.249437531781 33.9535766122058, 131.249815573503 33.9540433155232, 131.24989398052 33.9541326484292, 131.248652438369 33.9548887442266, 131.248130909122 33.9552104062115, 131.247529434573 33.9555769700686, 131.246965335854 33.9543993017293, 131.246255873035 33.9529773976969, 131.246666714323 33.9528631233876, 131.247757358073 33.9525786797459, 131.248295477833 33.9521892414442, 131.248303055648 33.9521840859555, 131.248815894112 33.9528262039508)) ^^http://www.opengis.net/ont/geosparql#wktLiteral