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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 to_value(original_string, corenlp_value=None):
 """Convert the string to Value object. Args: original_string (basestring):
 Original string corenlp_value (basestring):
 Optional value returned from CoreNLP Returns: Value """

    if isinstance(original_string, Value):
        # Already a Value
        return original_string
    if not corenlp_value:
        corenlp_value = original_string
    # Number?
    amount = NumberValue.parse(corenlp_value)
    if amount is not None:
        return NumberValue(amount, original_string)
    # Date?
    ymd = DateValue.parse(corenlp_value)
    if ymd is not None:
        if ymd[1] == ymd[2] == -1:
            return NumberValue(ymd[0], original_string)
        else:
            return DateValue(ymd[0], ymd[1], ymd[2], original_string)
    # String.
    return StringValue(original_string)