<http://schema.org/query-input>
"required name=search_keywords"^^<http://www.w3.org/2001/XMLSchema#string>
<http://ejaba.net/277534/%D8%B9%D9%84%D8%A7%D9%85%D8%A7%D8%AA-%D8%A7%D9%84%D8%B3%D8%A7%D8%B9%D8%A9>