<http://schema.org/query-input>
"required name=search_keywords"^^<http://www.w3.org/2001/XMLSchema#string>
<http://ejaba.net/162517/%D8%A3%D9%8A%D9%86-%D8%AA%D9%82%D8%B9-%D8%A5%D9%86%D8%AA%D8%B1%D9%84%D8%A7%D9%83%D9%86>