<http://schema.org/query-input>
"required name=search_keywords"^^<http://www.w3.org/2001/XMLSchema#string>
<http://ejaba.net/198207/%D8%A7%D8%B1%D8%AA%D8%AF-%D8%B9%D9%84%D9%8A-%D8%B9%D9%82%D8%A8%D9%8A%D9%87>