メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.991212106732 34.9946523589868, 136.991138011908 34.9946521792452, 136.989183742036 34.9946465546832, 136.989131575678 34.9943720295521, 136.989150935921 34.9942885341494, 136.989299992036 34.9940976913482, 136.989734173662 34.9935133111556, 136.989949065909 34.9936127869704, 136.990070968833 34.993627615126, 136.990663631845 34.9935737667759, 136.991066501112 34.9935349197018, 136.991212106732 34.9946523589868)) ^^http://www.opengis.net/ont/geosparql#wktLiteral