メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.370538151697 34.8200702727821, 137.371732071937 34.8204894705894, 137.372001189029 34.8205797380152, 137.370744340056 34.822915282003, 137.370488518974 34.8227635033921, 137.36913100723 34.821926199998, 137.368543462396 34.8215643019163, 137.369121824759 34.8209662379579, 137.36946000878 34.820626485569, 137.370140630156 34.8199428859611, 137.370538151697 34.8200702727821)) ^^http://www.opengis.net/ont/geosparql#wktLiteral