<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://vilne.org.ua/2016/02/%d0%b6%d0%b5%d0%b1%d0%b8-%d0%bd%d0%b5-%d0%b3%d0%be%d0%bf-%d1%81%d1%82%d0%be%d0%bf/>