convert_prefecture_from_kana(c("\u3068\u3046\u304d\u3087\u3046\u3068"))
convert_prefecture_from_kana(c("\u30c8\u30a6\u30ad\u30e7\u30a6\u30c8", "\u30ad\u30e7\u30a6\u30c8"))
convert_prefecture_from_kana(c("\u30c8\u30a6\u30ad\u30e7\u30a6", "\u304a\u304a\u3055\u304b"))
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