var regions = [];
regions["hokkaido"] = "hokkaido";
regions["aomori"] = "tohoku";
regions["iwate"] = "tohoku";
regions["akita"] = "tohoku";
regions["yamagata"] = "tohoku";
regions["miyagi"] = "tohoku";
regions["fukushima"] = "tohoku";
regions["tochigi"] = "kanto";
regions["ibaraki"] = "kanto";
regions["gumma"] = "kanto";
regions["saitama"] = "kanto";
regions["tokyo"] = "kanto";
regions["kanagawa"] = "kanto";
regions["chiba"] = "kanto";
regions["shiga"] = "kansai";
regions["nara"] = "kansai";
regions["kyoto"] = "kansai";
regions["wakayama"] = "kansai";
regions["osaka"] = "kansai";
regions["hyogo"] = "kansai";
regions["tottori"] = "chugoku";
regions["yamaguchi"] = "chugoku";
regions["shimane"] = "chugoku";
regions["okayama"] = "chugoku";
regions["hiroshima"] = "chugoku";
regions["niigata"] = "chubu";
regions["toyama"] = "chubu";
regions["ishikawa"] = "chubu";
regions["fukui"] = "chubu";
regions["yamanashi"] = "chubu";
regions["nagano"] = "chubu";
regions["gifu"] = "chubu";
regions["shizuoka"] = "chubu";
regions["aichi"] = "chubu";
regions["mie"] = "chubu";
regions["tokushima"] = "shikoku";
regions["kagawa"] = "shikoku";
regions["ehime"] = "shikoku";
regions["kochi"] = "shikoku";
regions["fukuoka"] = "kyushu";
regions["oita"] = "kyushu";
regions["saga"] = "kyushu";
regions["miyazaki"] = "kyushu";
regions["nagasaki"] = "kyushu";
regions["kagoshima"] = "kyushu";
regions["kumamoto"] = "kyushu";
regions["okinawa"] = "kyushu";