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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 extract_element_internationalized_comment(element):
 """ Extracts the xib element's comment, if the element has been internationalized. Args: element (element):
 The element from which to extract the comment. Returns: The element's internationalized comment, None if it does not exist, or hasn't been internationalized (according to the JTLocalize definitions). """

    element_entry_comment = get_element_attribute_or_empty(element, 'userLabel')
    if element_entry_comment == "":
        try:
            element_entry_comment = element.getElementsByTagName('string')[0].firstChild.nodeValue
        except Exception:
            element_entry_comment = ""
    if not element_entry_comment.lower().startswith(JT_INTERNATIONALIZED_COMMENT_PREFIX):
        return None
    else:
        return element_entry_comment[len(JT_INTERNATIONALIZED_COMMENT_PREFIX):]