メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.011833269833 36.7313255335052, 137.010606235442 36.7314524332811, 137.010614648388 36.7314177332215, 137.010668844083 36.731107380084, 137.01068001403 36.7308875145917, 137.01065937993 36.7305037693551, 137.011520585566 36.7306802698561, 137.011590923373 36.7306946542033, 137.011751584403 36.7307035228903, 137.011833269833 36.7313255335052)) ^^http://www.opengis.net/ont/geosparql#wktLiteral