<http://schema.org/query-input>
"required name=search_keywords"^^<http://www.w3.org/2001/XMLSchema#string>
<http://ejaba.net/184519/%D9%83%D8%B0%D8%A8%D9%88%D8%A7-%D9%88%D9%84%D9%88-%D8%B5%D8%AF%D9%81%D9%88-%D8%A7>