メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.323596457126 43.0631057323488, 141.3240305387 43.0631659342664, 141.323887420744 43.0637203033286, 141.32373452519 43.0643186194684, 141.323349421046 43.0642540312888, 141.323040369123 43.064222127619, 141.322532890916 43.0641436038917, 141.322340144814 43.0641146817371, 141.322498782369 43.0639440152183, 141.322686784033 43.0637214725513, 141.322684478745 43.0635500618927, 141.322637064298 43.0635520682559, 141.322677748451 43.0633985189907, 141.323183133518 43.0633355937383, 141.323242563814 43.0630582758779, 141.323596457126 43.0631057323488)) ^^http://www.opengis.net/ont/geosparql#wktLiteral