<http://schema.org/provider>
"The Next Web"^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/socialmedia/2013/09/07/a-scientific-guide-to-posting-tweets-facebook-posts-emails-and-blog-posts-at-the-best-time/?goback=.gmr_66275>