<http://schema.org/query-input>
"required name=search_keywords"^^<http://www.w3.org/2001/XMLSchema#string>
<http://ejaba.net/500/%D9%85%D9%86-%D9%85%D8%A4%D9%84%D9%81-%D9%83%D8%AA%D8%A7%D8%A8-%D9%82%D8%B0%D8%A7%D8%A6%D9%81-%D8%A7%D9%84%D8%AD%D9%82>