メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.902541925583 36.9527042927237, 140.902377972032 36.9523574892252, 140.90220951766 36.9518635900768, 140.902079651178 36.9514950076209, 140.901991993213 36.9511967310762, 140.901972706447 36.9511281926158, 140.901859291223 36.9507502399031, 140.902871430503 36.9506859498332, 140.903731304815 36.9506475916738, 140.903872440348 36.9523517246419, 140.903104889609 36.9525521626736, 140.902541925583 36.9527042927237)) ^^http://www.opengis.net/ont/geosparql#wktLiteral