def is_ob_site_html(html):
    """Check if some HTML looks like it is from the overcomingbias site.

    Parameters
    ----------
    html : bs4.BeautifulSoup
        An HTML page, possibly from the overcomingbias site.

    Returns
    -------
    is_ob_site_html : bool
        True if the input HTML "looks like" it is from the
        overcomingbias site, and False otherwise.
    """
    site_title = html.find(id="site-title")
    if site_title is not None:
        return "www.overcomingbias.com" in site_title.a["href"]
    return False