メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.85285248798 35.3109847042325, 136.852851615625 35.3112118874775, 136.852037939909 35.3112097701772, 136.852028182388 35.3109767145665, 136.852032970664 35.3106534837835, 136.85282523445 35.3106758974193, 136.85285248798 35.3109847042325)) ^^http://www.opengis.net/ont/geosparql#wktLiteral