メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.346438035661 43.0390095588542, 141.346819613323 43.0390371876157, 141.347284849126 43.0390678662305, 141.347254572334 43.039308437658, 141.347201460176 43.039733234657, 141.347156743808 43.0400430373505, 141.347106269385 43.0403924611985, 141.346532206593 43.0403546623703, 141.345251867179 43.0402721056098, 141.34514498726 43.0402441834192, 141.345238381777 43.0395911334504, 141.345319277306 43.0389860196012, 141.345336993409 43.0389222292718, 141.346438035661 43.0390095588542)) ^^http://www.opengis.net/ont/geosparql#wktLiteral