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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def negated(input_words, include_nt=True):
 """ Determine if input contains negation words """

    input_words = [str(w).lower() for w in input_words]
    neg_words = []
    neg_words.extend(NEGATE)
    for word in neg_words:
        if word in input_words:
            return True
    if include_nt:
        for word in input_words:
            if "n't" in word:
                return True
    if "least" in input_words:
        i = input_words.index("least")
        if i > 0 and input_words[i - 1] != "at":
            return True
    return False