<http://schema.org/query-input>
"required name=search_keywords"^^<http://www.w3.org/2001/XMLSchema#string>
<http://ejaba.net/163674/%D8%AC%D9%88%D8%A7%D8%A8-%D8%B3%D8%A4%D8%A7%D9%84-%D8%A5%D8%B9%D9%82%D9%84>