メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.898039159491 37.5224815547432, 138.898047518182 37.5229965511343, 138.89690558568 37.5229719418546, 138.897127368672 37.522245686494, 138.897259555289 37.5219567563483, 138.896657305453 37.5218566970393, 138.896568056031 37.521834892043, 138.896298699215 37.5214674750217, 138.896082535731 37.5211553521556, 138.895327536945 37.5200816400254, 138.89655315884 37.5195561848113, 138.896628538177 37.5190634327058, 138.897837405789 37.5190550170241, 138.897911535185 37.5193742323816, 138.898231854062 37.5193709040149, 138.899563427649 37.519384163798, 138.899563339602 37.5198877857891, 138.898933760974 37.519881176612, 138.89890597704 37.5214542229371, 138.898511307788 37.5214551272115, 138.898516976281 37.5219623904973, 138.89801559337 37.5219656235962, 138.898039159491 37.5224815547432)) ^^http://www.opengis.net/ont/geosparql#wktLiteral