Convert escaped html characters into unescaped html characters.
    For example: "&lt;b&gt;" becomes "<b>".

def unescape_html(statement):
    """
    Convert escaped html characters into unescaped html characters.
    For example: "&lt;b&gt;" becomes "<b>".
    """
    import html

    statement.text = html.unescape(statement.text)

    return statement