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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 get_bool_raw(s: str) -> Optional[bool]: """ Maps ``"Y"``, ``"y"`` to ``True`` and ``"N"``, ``"n"`` to ``False``. """

    if s == "Y" or s == "y":
        return True
    elif s == "N" or s == "n":
        return False
    return None