メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.918211564828 34.7529521408245, 137.919406265678 34.7533464720533, 137.919915887978 34.7535146925589, 137.919310911197 34.7546858493673, 137.918810084915 34.7545220365534, 137.91763577899 34.7541377976164, 137.916660077219 34.7538166167753, 137.916195109106 34.7536635279033, 137.916043611254 34.753613641773, 137.91537894159 34.7533916979234, 137.915429510083 34.7533171453071, 137.915564677859 34.753122285108, 137.915873889658 34.752676548845, 137.91613701388 34.752280173276, 137.916793165969 34.7524927747123, 137.918211564828 34.7529521408245)) ^^http://www.opengis.net/ont/geosparql#wktLiteral