def get_parent_tag(mention):
span = _to_span(mention)<EOL>i = _get_node(span.sentence)<EOL>return str(i.getparent().tag) if i.getparent() is not None else None<EOL>
Return the HTML tag of the Mention's parent.

    These may be tags such as 'p', 'h2', 'table', 'div', etc.
    If a candidate is passed in, only the tag of its first Mention is returned.

    :param mention: The Mention to evaluate
    :rtype: string