<http://schema.org/keywords>
"\u0627\u0644\u0639\u0627\u0645 \u0627\u0644\u062F\u0631\u0627\u0633\u064A"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.huffpostarabi.com/2015/09/20/story_n_8165094.html>