メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.888408345391 35.2370212125626, 136.888229560189 35.2370246029137, 136.886737204898 35.2370375558253, 136.886724648271 35.236591812972, 136.886717055986 35.2360630499434, 136.886698441681 35.2336199852968, 136.886690634878 35.2334387648669, 136.887163014264 35.233437326142, 136.887970220081 35.2334367997987, 136.888387287787 35.2350690739135, 136.888399543685 35.2360613108917, 136.888408756185 35.2365149352872, 136.88841114705 35.2366682538261, 136.888408345391 35.2370212125626)) ^^http://www.opengis.net/ont/geosparql#wktLiteral