<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.matb3aa.com/song/%d9%85%d9%87%d8%b1%d8%ac%d8%a7%d9%86-%d9%84%d8%ba%d8%a8%d8%b7%d9%8a%d8%b7%d9%87.html>