<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://vilne.org.ua/2016/06/%d0%bf%d0%bf-%d0%bd%d0%be%d0%b2%d0%b0%d1%82%d0%be%d1%80-%d0%bf%d0%bb%d1%8e%d1%81/>