<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://vilne.org.ua/2016/01/%d1%84%d0%b0%d1%82%d0%b0%d0%bb%d1%8c%d0%bd%d0%b8%d0%b9-%d1%80%d0%be%d0%bc%d0%b0%d0%bd/>