<https://www.pauwr.nl/blog/2011/06/google-plus-one-zichtbaar-in-nederlandse-adwords/#primaryimage>
<http://schema.org/url>
<https://www.pauwr.nl/wp-content/uploads/2012/10/PR_plusOne_Google-AdWords.jpg>
<https://www.pauwr.nl/blog/2011/06/google-plus-one-zichtbaar-in-nederlandse-adwords/>