<https://www.morevisibility.com/blogs/sem/five-steps-to-successful-mobile-campaigns-in-google-adwords.html>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebPage>
<https://www.morevisibility.com/blogs/tag/mobile-campaigns/page/2/>