<https://www.itproportal.com/2011/10/27/iphone-4s-pushes-iphone-4-contracts-30/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebPage>
<https://www.itproportal.com/2011/10/27/iphone-4s-pushes-iphone-4-contracts-30/>